mbgrid
Section:  MB-System 5.0  (l)
Updated:  19 January 2006 
Index


 
NAME

mbgrid - Grid bathymetry, amplitude, or sidescan data 
from swath sonar data files.

 
VERSION

Version 5.0

 
SYNOPSIS

mbgrid -Ifilelist -Oroot 
-Rwest/east/south/north [-Adatatype 
-Bborder -Cclip[/mode] -Dxdim/ydim 
-Edx/dy/units[!] -Fmode 
-Ggridkind -Jprojection -Kbackground
-Llonflip -M -N -Ppings -Q
-Sspeed -Ttension -Utime 
-V -Wscale -Xextend]

 
DESCRIPTION

mbgrid is a utility used to grid bathymetry, amplitude, or sidescan 
data contained in a set of swath sonar data files. This program uses 
one of four algorithms to grid regions covered by swath sonar 
swaths and then can fill in gaps between the swaths (to the degree 
specified by the user) using a thin plate spline interpolation.
The gridding algorithms include gaussian weighted average,
median filter, minimum filter (use minimum value in grid bin), and
maximum filter (use maximum value in grid bin).

The user must specify the bounds of the region to be gridded (-R), 
the dimensions (-D) or node spacing -E of the grid, 
a file containing a 
list of the data files to be used and their data formats (-I), 
and a character string to be used as the root of the
output filenames (-O).  The user can also specify the type of the
input data (-A), the width of the gaussian filter used for 
weighted average gridding (-W), the maximum distance from 
data points that the spline 
interpolation is used (-C), the format of the output files, and
other parameters.

By default, mbgrid generates grids in Geographic coordinates,
meaning that position is defined in longitude and latitude using
the WGS84 horizontal datum. The -J option can be used to specify 
an alternate, projected coordinate system (PCS). When a PCS is used,
position will be defined in eastings and northings (meters) relative
to the origin of the particular PCS. Universal Transverse Mercator
is the most commonly used PCS in the oceanographic community, but
mbgrid supports a large number of other PCS as well. A list of
the supported PCS's is provided at the end of this manual page.

Before opening an input swath data file, mbgrid checks for
an ascii file in the same directory having the same name except
that ".inf" is appended to the end. The program assumes that this
ascii file contains the output of the program mbinfo run on
the input data file. If the ".inf" file exists, mbgrid reads
the minimum and maximum longitude and latitude bounds from the 
mbinfo output and compares those to the working bounds
for the grid. If the ".inf" file indicates that none of the data
in the input file lies inside the working grid bounds, that input
file is skipped. This allows users to maintain a single master list
of data files for use in all gridding without the performance penalty
of mbgrid reading through all the data files, even those
with no relevent data. We recommend that users maintain a ".inf"
file for each swath data file used for gridding or plotting. The
programs mbswath and mbcontour also use ".inf" files
in the same fashion.

Usually, the internal working grid has the same boundaries as the
output grid. However, the -X option
allows the size of the internal grid to be increased so that data outside
the grid can be used to guide the spline interpolation of data gaps which
happen to lie at the the edge of the grid.  This is particularly important
when adjacent grids are created which should match along the edges.
The data input bounds are set to a region three times as large as
the working grid in both longitude and latitude.  The program reads all
pings which lie within the data input bounds, and accepts all beam
values with locations within the working grid. In addition to swath sonar
data in formats supported by MB-System (see the MB-System manual
page), mbgrid can also read data from ASCII text files in
longitude, latitude, value triples. This allows one to incorporate
conventional echosounder bathymetry data into the gridding.

If the default weighted average gridding scheme is being used, 
each data point's contribution to a Gaussian weighted
average for each nearby grid cell is calculated as the point is read
and added to
the grid cell sums.  The weighting function is given by:

        W(r) = Aexp(-r**2/a**2)




where r is the distance from the center of the grid point to the data point,
a is the distance at which the weighting function falls to 1/e of its
maximum value, and A is a normalizing factor set so that the sum of all
the weights adds to a value of 1.  Normally, the distance a is set to be
half the average grid point spacing, but this can be varied using the -W
option. 

If the -F5 option is used, the gridding is performed using
beam footprints rather than a weighting function tied to the grid
cell spacing. In this algorithm, the beam footprints are calculated
using the angular beamwidths and the sonar altitude above the seafloor.
A weighting value is calculated for each grid cell which fully or
parially lies within the beam footprint; these weighting values 
represent the fraction of the beam contained within the cell. This
approach allows one to sensibly grid data using a resolution
greater than that of the raw data. Thus, if one has data with
a large depth variation, one can generate a grid with a cell spacing
appropriate for the high resolution, shallow data and still get
sensible results in deep regions where the grid cells may be
much smaller than the beam footprints.

If the -F2 option is used, the gridding is performed with a
median filter scheme instead of a Gaussian weighted average. In this
approach, all of the values for each bin are held in memory until
all of the data has been read. Then, the median value for each bin
is assigned as the gridded value for that bin.  The advantage of a
median filter approach is that it is relatively insensitive to 
isolated artifacts in the data, provided that several samples
exist for each bin.  The disadvantage to the median filter is
that in the absence of artifacts, the weighted average scheme
does a better job of representing the gridded field, particularly
if the spectral characteristics of the gridded field are important.
The median filter approach also requires much more memory than
a weighted average. In general, edited bathymetry should be gridded
using the Gaussian weighted average, while unedited bathymetry,
beam amplitude, and sidescan data should be gridded using the
median filter.

The minimum filter (-F3) and maximum filter
(-F4) gridding schemes work like the median filter,
except that the minimum or maximum bin values are reported
instead of the median. These algorithms can be useful for 
producing grids which strongly reflect outliers in the
data. Hydrographers often prefer to grid bathymetry using a minimum
depth scheme because they are most interested in the
shallowest (most dangerous) soundings in their data.

Normally, all of the data which falls into the region of interest
is used to construct the gridded data set. This means that the
data from overlapping swaths will be "averaged" in the region of
overlap. Averaging bathymetry data from overlapping swaths is 
usually fine, but averaging imagery data (beam amplitude or sidescan) 
derived from different swaths is usually undesirable. The -U
option allows the user to force mbgrid to ignore data which
overlies regions already covered by previous data (as defined by
a time lag criterea). Alternatively, the user can force the program
to use only the last data in a region, again as defined by a time
lag. This option works best with the median filter scheme. 

The gridding can be augmented by interpolation using a 2D thin plate
spline algorithm with optional tension. The use of interpolation is
set with the -Cclip[/mode] option, and is only used to fill
in grid cells left undefined after all of the swath data have been
processed. The clip value sets the distance from swath data to
which the interpolation is applied (this distance is specified as
an integer number of grid cells, so the physical distance is
clip times the grid cell interval). If 
mode = 1 (the default), undefined cells will be filled with interpolation
only if cells filled with swath data are found within 
clip cells in two opposite directions 
(e.g east and west, or northeast and southwest). This approach serves
to fill in data gaps while avoiding adding an interpolated band around
the edges of a survey. A caution: a large value of clip 
combined with mode = 1 will be VERY slow. If mode = 2, then
undefined cells will be filled with the interpolation if they are within
clip cells of swath data in any direction. This approach is faster,
but can make a survey look larger and more complete than in reality.
If mode = 3 or clip is 
set to a value greater than both dimensions of the output grid, then
all grid cells not set by swath data will be filled by interpolation.
The -Ttension option modulates the thin plate spline algorithm.
Using the default tension = 0.0 corresponds to a minimum curvature,
pure Laplacian solution. If tension is made large, the solution
tends toward a thin plate spline and is effectively flattened.

The -Kbackground option is used to underlay a bathymetry or topography
grid with a global or regional topography model. The background data
model can be read from a GMT grid file or from a database accessed by the GMT program grdraster.
In the former case background is just the file path for the 
background grid. In the latter case background is an 
identifier number used to specify which
dataset to extract using grdraster. These identifiers are user
defined and vary with GMT installations. When the -Kbackground
option is invoked, grd2xyz or grdraster is used to extract all of the longitude,
latitude, and topography values within the specified database that lie
within the desired grid. These values are interpolated onto the desired
grid locations using the thin plate spline algorithm, and then mapped onto
the grid wherever the values are undefined by either swath data or the
spline interpolation invoked with the -C option.

For magnetic inversions it is useful to have a bathymetry grid which
tails off to a constant value at the border.  To facilitate this, the
-B option allows the user to set the border of a smoothly
interpolated grid to a constant value wherever no data are present.  
This is useful only if the data are confined to the central region 
of the grid and a smooth interpolation is done with a large clip
so that the entire grid is filled.

The output grid will by default contain values of 99999.9 at cells
containing no data; if the -N option is used then the flagging
value used is NaN, or not-a-number.

The names of the output files are based on the root character string
specified using the -O option. A number of grid formats are 
supported, including all of the grid formats supported by GMT.
See the -G option below for a list of the available formats.
If the grid is output in any of the GMT grid formats,
then its filename is "root.grd", and a shellscript
which will allow the contents of the grid to be viewed using GMT programs
is also output with the filename "root.grd.cmd".  If the
-G1 option is used to specify an ascii format grid, then the
output grid filename will be "root.asc", but no plotting shellscript 
will be created. 

A datalist file containing references to all of the swath files actually 
contibuting to the grid is also created. This file is named by adding 
a ".mb-1" suffix to the root string.

The -M option causes mbgrid to output two additional
grids, the first ("root_num.grd") being the number of data 
points located within each bin, and the second ("root_sd.grd") 
being the standard deviation of the
data points located within each bin.  Plotting shellscripts
called "root_num.grd.cmd" and "root_sd.grd.cmd" are also output
if the grids are in a GMT grid format. The -M
option is ignored when the minimum or maximum filter gridding
algorithms are used.

 
AUTHORSHIP

David W. Caress (caress@mbari.org)




  Monterey Bay Aquarium Research Institute



Dale N. Chayes (dale@ldeo.columbia.edu)




  Lamont-Doherty Earth Observatory

 
OPTIONS


-A


datatype



Sets the type of data to be read and gridded. If datatype = 1,
bathymetry data will be gridded (positive downwards). If datatype = 2,
bathymetry data will be gridded as topography (positive upwards).  
If datatype = 3,
amplitude data will be gridded.  If datatype = 4,
sidescan data will be gr 
-K


background



Enables filling in all undefined grid cells with bathymetry or topography
from a global or regional database accessed with the GMT program
grdraster. The background specifies which locally defined
database is accessed with grdraster.
idded.  
Default: datatype = 1 (bathymetry).
-B


border



Sets the border of a smoothly interpolated grid to the value border
wherever no data exist, provided border > 0.0.
Default: border = 0.0
-C


clip/mode



Controls the use of spline interpolation to fill grid cells not
filled by swath data. The clip value sets the distance from
swath data (in grid cells) that the spline interpolation may be 
applied. If clip=0 no spline interpolation will be done. 
If mode=1 (the default), then the interpolation will fill
data gaps up to two times clip grid cells in size. If mode=2 
then the spline interpolation will fill all undefined cells within
a distance of clip cells from data. If mode = 3 or clip is 
set to a value greater than both dimensions of the output grid, then
all grid cells not set by swath data will be filled by interpolation.
Default: clip = 0 and mode = 1.
-D


xdim/ydim



Sets the dimensions of the output grid.  This option is superceded
if the user specifies the grid spacing with the -E option.
Default:  xdim = ydim = 101.
-E


dx/dy/units[!]



Sets the grid cell spacing to dx in longitude and dy
in latitude. If units is not specified, the dx 
and dy values are assumed to be in meters. Valid values
for units include "km", "meters", and "degrees".
If not in degrees, the grid cell spacing values are converted to
degrees using the central latitude of the grid. If 
dy = 0.0, then the latitude cell spacing will be set
equal to the longitude cell spacing (after conversion to
degrees, if necessary).
By default, the grid spacing is calculated from 
the grid bounds and the grid dimensions. When the user
uses the -E option to set the cell spacings, the
grid dimensions are calculated using the grid bounds and
grid cell spacings. However, slight adjustments to the
grid cell spacings are usually required to keep
the grid bounds as specified. Appending an ! to the end of 
the -E arguments forces mbgrid to use the
exact grid cell spacing values specified by adjusting the 
grid bounds.
-F


mode



Sets the gridding algorithm to be used.

        mode = 1:         Gaussian Weighted Mean


        mode = 2:         Median Filter


        mode = 3:         Minimum Filter


        mode = 4:         Maximum Filter


        mode = 5:         Weighted Sonar Footprint

The default is mode = 1 (Gaussian Weighted Mean).
-G


gridkind



This option sets the format of the output grid file.
The default is to output a GMT netCDF 4-byte float grid.
The user may specify the grid format either by using an
identifier number, or by using the GMT grid format
syntax, which allows for scaling and offsets of the data.

First, the simple grid format identifiers are:

        gridkind = 1:   ASCII table


        gridkind = 2:   binary file (GMT version 1 GRD file)


        gridkind = 3:   netCDF file (GMT version 2 GRD file)


        gridkind = 4:   Arc/Info and ArcView ASCII grid


        gridkind = 100: GMT netCDF 4-byte float format [Default]


        gridkind = 101: Native binary single precision floats in scanlines with leading grd header


        gridkind = 102: Native binary short integers in scanlines with leading grd header


        gridkind = 103: 8-bit standard Sun rasterfile (colormap ignored)


        gridkind = 104: Native binary unsigned char in scanlines with leading grd header


        gridkind = 105: Native binary bits in scanlines with leading grd header


        gridkind = 106: Native binary ``surfer'' grid files


        gridkind = 107: netCDF 1-byte byte format


        gridkind = 108: netCDF 1-byte char format


        gridkind = 109: netCDF 2-byte int format


        gridkind = 110: netCDF 4-byte int format


        gridkind = 111: netCDF 8-byte double format





Second, a GMT grid format string has the form:




        =id[/scale/offset[/nan]]




where id is the GMT format id, and the other values
are optional. If scale and offset are given, the
data will be multiplied by scale and offset by offset
prior to being output. The nan value sets the value used for
"not-a-number". The GMT format id's for these format strings are:

        id = 0: GMT netCDF 4-byte float format [Default]


        id = 1: Native binary single precision floats in scanlines with leading grd header


        id = 2: Native binary short integers in scanlines with leading grd header


        id = 3: 8-bit standard Sun rasterfile (colormap ignored)


        id = 4: Native binary unsigned char in scanlines with leading grd header


        id = 5: Native binary bits in scanlines with leading grd header


        id = 6: Native binary ``surfer'' grid files


        id = 7: netCDF 1-byte byte format


        id = 8: netCDF 1-byte char format


        id = 9: netCDF 2-byte int format


        id = 10:        netCDF 4-byte int format


        id = 11:        netCDF 8-byte double format




Note that the following arguments are equivalent because they
all produce a standard GMT netCDF 4-byte float grid:

        -G3


        -G100


        -G=0




Should the user wish to produce a grid in native binary floats,
then the following two arguments will work:

        -G101


        -G=1




Should the user wish to produce a grid in native short int format
with a scaling factor of 10, an offset of 32000, and a NaN value
of 32767, then the following arguments will suffice:




        -G=2/10/32000/32767


        

If gridkind = 3 or gridkind >= 100, 
mbgrid also outputs shellscripts 
which run GMT programs to provide preliminary color
fill maps of the gridded data. These shellscripts are 
generated using the mbm_grdplot macro.

If gridkind = 4, the output grids will be in the Arc/Info ASCII 
grid format.  Arc/Info ASCII grids use "square" bins,
meaning that the longitude and latitude grid cell spacings must
be identical. Thus, whenever the gridkind = 4 option is
used, the -E option must also be used in a way which
ensures equal grid cell spacings (see the -E documentation
above).
Default: gridkind = 100.
-H


This "help" flag cause the program to print out a description
of its operation and then exit immediately.
-I


datalist



Sets the filename of the file containing a list of the input swath sonar
data files and their formats.  In the datalist file, each
data file should be followed by a data format identifier, e.g.:

        datafile1 11


        datafile2 24




This program uses the MBIO library and will read any swath sonar
format supported by MBIO. A list of the swath sonar data formats
currently supported by MBIO and their identifier values
is given in the MBIO manual page.  A format identifier of 0 indicates
that the file contains lines of (lon, lat, depth) triples which can be read
in free format.



An input datafile may be accompanied by a "fast bathymetry" or "fbt" file. 
An "fbt" file contains only swath bathymetry information in a compact format (format 71),
and is thus quick to read. The "fbt" fine naming convention is to add the 
".fbt" suffix to the original swath
data filename. In the
event that a bathymetry or topography grid is being generated, mbgrid
will attempt to read an "fbt" file in lieu of the original data.
Default: datalist = datalist.mb-1
-J


projection
By default, mbgrid generates grids in Geographic coordinates,
meaning that position is defined in longitude and latitude using
the WGS84 geographic coordinate system. 
The -J option can be used to specify 
an alternate, projected coordinate system (PCS). When a PCS is used,
position will be defined in eastings and northings (meters) relative
to the origin of the particular PCS. Universal Transverse Mercator
is the most commonly used PCS in the oceanographic community, but
mbgrid supports a large number of other PCS's as well. 
The underlying projection functions derive from the PROJ.4 library
written by Gerald Evenden, then of the U.S. Geological Survey.

The projection argument for the -J option can be either
a PCS identifier from the projection definition list provided at the 
end of this manual page, or simply -JU to specify using
UTM in whatever zone is appropriate for the grid bounds specified
with the -R option.

For instance, to fully specify a particular northern UTM 
zone, set projection = UTMXXN where XX gives
the UTM zone (defined from 01 to 60). As an example, a northern UTM
zone 12 projection can be specified using -JUTM12N.
Southern UTM zones are specified as UTMXXS. The European Petroleum
Survey Group (EPSG) has defined a large number of PCS's used worldwide
and assigned number id's to each; one can also specify the northern
UTM zone 12 projection using its EPSG designation, 
or -Jepsg32612.
When the projected coordinate system is fully specified
by the -J option, then the grid bounds may be specified using
-R in either longitude and latitude or in eastings and northings.

Alternatively, one may indicate a UTM projection without specifying the
zone by using -JU. In this case, the 
UTM zone will be inferred from the midpoint of the 
specified longitude and latitude bounds, and then the 
longitude and latitude bounds given with the 
-fR option are translated to UTM eastings and northings.

All grids and mosaics produced by MB-System 
programs contain identifiers that are recognized
by the plotting macros mbm_grdplot, 
mbm_grd3dplot, and mbm_grdtiff.
These plotting macros automatically use a 
linear map projection whenever they
encounter grids and mosaics that are already 
in a projected coordinate system. Also, the program mbgrdtiff
automatically inserts the appropriate projection information into
the GeoTIFF images it generates. As a result, images generated by
mbgrdtiff will be properly georeferenced when they are imported
into GIS software.

 
-K


background



Enables filling in all undefined grid cells with bathymetry or topography
from a global or regional database. If raster data have been locally made 
available through the GMT program grdraster, these can be 
accessed by specifying background as the grdraster dataset id number
(e.g. -K4 - note that grdraster 
datasets are numbered starting at 1).
Users can also use data in GMT grids as a background (including grids
generated by mbgrid) by specifying background as the file path 
to the desired grid (e.g. -K/usr/local/share/globaltopo.grd).

 
-L


lonflip



Sets the range of the longitude values returned.
If lonflip=-1 then the longitude values will be in
the range from -360 to 0 degrees. If lonflip=0 
then the longitude values will be in
the range from -180 to 180 degrees. If lonflip=1 
then the longitude values will be in
the range from 0 to 360 degrees.
Default: lonflip = 0.
-M


Causes two additional grids to be output. One is a grid containing
the standard deviation of the data within each grid cell relative
to the grid value, the other contains the number of data 
points in each grid cell. This option is ignored when the minimum
or maximum filter gridding algorithms are used (see the -F option).
-N


Causes grid cells with no data and no interpolation to be set to a
value of NaN instead of the default value of 99999.9.  The NaN value
is expected by GMT programs such grdview.
-O


root



Sets the character string to be used as the root of the
output filenames. For example, if the grid is output as a GMT 
version 2 GRD format (netCDF) file (the default), 
then its filename is "root.grd". If the
-G1 option is used to specify an ascii format grid, then the
output grid filename will be "root.asc". If the
-G2 option is used to specify a version 1 GRD 
format (binary) grid, then the
output grid filename will be "root.grd1". If the output grid is
in the GMT version 2 GRD format, a shellscript
which will allow the contents of the grid to viewed using GMT programs
is also output with the filename "root.grd.cmd".
-P


pings
Sets the ping averaging of the input data. If pings > 0, then
that number of input pings will be averaged to produce one output
ping.  If pings = 0, then the ping averaging will automatically
be done so that the along-track ping spacing is equal to the across-track
beam spacing. Default: pings = 1.
-Q


Normally, bathymetry or topography data is gridded in meters. If
this option is used, bathymetry or topography data is gridded
in feet.
-R


west/east/south/north



Sets the longitude and latitude bounds of the output grid. If the user
uses the -E option to set the grid spacing, then the dimensions
will be calculated from the grid bounds and spacing. In these
circumstances rounding errors will usually require that the eastern
and northern bounds be adjusted to fit exactly with the 
grid dimensions and spacing.
-S


speed



Sets the minimum speed in km/hr (5.5 kts ~ 10 km/hr) allowed in 
the input data; pings associated with a smaller ship speed will not be
output. Default: speed = 0.
-T


tension



Sets the tension value used in the thin plate spline interpolation.

 
A tension of 0 gives a minimum curvature surface with free edges;
this is a pure Laplacian solution. A nonzero tension tends to 
suppress spurious oscillations and flatten
the interpolation toward the edges; a tension of infinity
yields a pure thin plate spline solution. The tension must be zero or
greater.  
Default: tension = 0.0 (minimum curvature solution).
-U


time



Forces mbgrid to avoid averaging overlapping swaths by
ignoring the data from later swaths. "Later" data is identified
using the time value. The time of the first data point
is saved for each bin in the grid; any other data points which
are more than time minutes before or after the initial
data point in the relevent bin are ignored. If time is
negative, the last data in a bin (within the time lag criterea)
will be saved and used instead of the first data.
-V-


Normally, mbgrid prints out information regarding its
controlling parameters during execution; the 
-V option causes the program to also print out statements
indicating its progress.
-W


scale



Sets the width of the gaussian weighting function in terms of
the grid spacing.  The distance to the 1/e point of the weighting
function is given by half of the grid spacing times scale.
Default: scale = 1.0
-X


extend



Extends the size of the internal grid so that the output grid is a
subset from the center of a larger grid.   This allows data outside
the output grid to guide the spline interpolation of data gaps which
happen to lie at the the edge of the output grid.  The amount of 
extension is extend times the grid width/height to each side.
Thus, if extend=1.0, then the internal grid will have dimensions
three times the output grid.
Default: extend = 0.0

 
EXAMPLES

Suppose you want to grid some Hydrosweep data in six data files over
a region with longitude bounds of 139.9W to 139.65W and latitude bounds
of 9.7S to 9.45S.  To get a 110 m grid spacing, you need a grid dimensions
of 251 (x or longitude) and 251 (y or latitude). First,
create a datalist file using a text editor which contains the
data filenames followed by the appropriate format identifier:


        d123e.mb24 24


        d126e.mb24 24


        d128e.mb24 24


        d129e.mb24 24


        d130e.mb24 24


        d131e.mb24 24


Then, run mbgrid as follows:

        mbgrid -R220.1/220.35/-9.7/-9.45 -D251/251 \


                -L1 -C251  -N \


                -Idatalist -Ourville_int -V


By specifying a clipping dimension of 251 we insure that the grid
will be filled in through spine interpolation even in the areas
not covered by data. The output looks like:

 

 Program MBGRID

 Version $Id: mbgrid.l,v 5.12 2006/03/06 21:57:21 caress Exp $

 MB-system Version 4.5

 

 MBGRID Parameters:

 List of input files: datalist

 Output fileroot:     urville_int

 Input Data Type:     Bathymetry

 Gridding algorithm:  Gaussian Weighted Mean

 Grid dimensions: 251 251

 Grid bounds:

   Longitude:  220.1000  220.3500

   Latitude:    -9.7000   -9.4500

 Working grid dimensions: 251 251

 Working Grid bounds:

   Longitude:  220.1000  220.3500

   Latitude:    -9.7000   -9.4500

 Input data bounds:

   Longitude:  219.8500  220.6000

   Latitude:    -9.9500   -9.2000

 Longitude interval: 0.001000 degrees or 109.778801 m

 Latitude interval:  0.001000 degrees or 110.605002 m

 Gaussian filter 1/e length: 0.055096 km

 Spline interpolation applied with clipping dimension: 251

 Spline tension (range 0.0 to 1.0): 10000000000.000000

 Grid format 3:  GMT version 2 grd (netCDF)

 NaN values used to flag regions with no data

 MBIO parameters:

   Ping averaging:       1

   Longitude flipping:   1

   Speed minimum:       0.0 km/hr

  

 29075 data points processed in d123e.mb8

 0 data points processed in d125e.mb8

 98175 data points processed in d126e.mb8

 68637 data points processed in d128e.mb8

 20703 data points processed in d129e.mb8

 80372 data points processed in d130e.mb8

 55620 data points processed in d131e.mb8

 

 352582 total data points processed

 

 Making raw grid...

 

 Doing spline interpolation with 53513 data points...

 

 Total number of bins:            63001

 Bins set using data:             53513

 Bins set using interpolation:    9488

 Bins not set:                    0

 Maximum number of data in a bin: 65

 Minimum value:     504.93   Maximum value:    3405.75

 Minimum sigma:    0.14060   Maximum sigma:  275.53399

 

 Outputting results...

 

 executing mbm_grdplot...

 mbm_grdplot -Iurville_int.grd -G1 -C -D -V -L"File urville_int.grd - Bathymetry Grid:Depth (m)"

 

 Program Status:

 --------------

 

   Plot Style:

     Color Fill

     Contours

     Horizontal Color Scale

 

   Input Files:

     Data GRD File:            urville_int.grd

     Intensity GRD List File:   

 

   Output Files:

     Output plot name root:    urville_int.grd

     Color pallette table:     urville_int.grd.cpt

     Plotting shellscript:     urville_int.grd.cmd

     Plot file:                urville_int.grd.ps

 

   Plot Attributes:

     Plot width:               6.5000

     Plot height:              6.5489

     Page size:                a

     Page width:               8.5

     Page height:              11

     Projection:               -Jm26

     Axes annotation:          5m/5m:."File urville_int.grd - Bathymetry Grid":

     Orientation:              portrait

      Number of colors:         11

     Color Pallette:           Haxby Colors

     Colors reversed

 

   Grid Data Attributes:

     Longitude min max:         220.1000   220.3500

     Latitude min max:           -9.7000    -9.4500

     Data min max:                 504.9       3406

 

   Primary Grid Plotting Controls:

     Contour control:          100

     Color start datum:        350.000000

     Color end datum:          3850.000000

     Color datum interval:     350.000000

 

   GMT Default Values Reset in Script:

     PAPER_WIDTH               8.5

     ANOT_FONT                 Helvetica

     LABEL_FONT                Helvetica

     HEADER_FONT               Helvetica

     ANOT_FONT_SIZE            8

     LABEL_FONT_SIZE           8

     HEADER_FONT_SIZE          10

     FRAME_WIDTH               0.074999999999999997

     TICK_LENGTH               0.074999999999999997

     PAGE_ORIENTATION          LANDSCAPE

     COLOR_BACKGROUND          0/0/0

     COLOR_FOREGROUND          255/255/255

     COLOR_NAN                 255/255/255

 

 --------------

 

 Plot generation shellscript <urville_int.grd.cmd> created.

 

 Instructions:

   Execute <urville_int.grd.cmd> to generate Postscript plot <urville_int.grd.ps>.

   Executing <urville_int.grd.cmd> also invokes xpsview to view the plot on the screen.

 

 --------------

 

 

 Done.

The names of the output files are based on the root character string
specified using the -O option.  Since the grid is output as a netCDF
GRD format file, its filename is "urville_int.grd"; a shellscript
which will allow the contents of the grid to viewed using GMT programs
is also output with the filename "urville_int.grd.cmd".

Suppose that one wants to grid the same data considered above using
the median filtering scheme instead of the default Gaussian weighted
mean scheme and also outputting grids of the data density and 
standard deviation values. The following will suffice:

        mbgrid -R220.1/220.35/-9.7/-9.45 -D251/251 \


                -L1 -C251 -N \


                -Idatalist -Ourville_int -F2 -M -V


 
SEE ALSO

mbsystem(l), mbmosaic(l), mbm_grid(l), mbm_grd2arc(l)

 
BUGS

The options for this program have grown a bit complicated.
If you have other problems, please let us know.

 
APPENDIX 1: PROJECTED COORDINATE SYSTEM IDENTIFIERS

The following is a list of the projected coordinate systems (PCS's)
that are supported by MB-System. The full PCS definitions are
found in the file mbsystem/share/Projections.dat. These definitions
are in the PROJ.4 format and derive from the PROJ.4
distribution obtained from http://www.remotesensing.org/ 
in September 2002.The proj library source code has been 
incorporated unchanged into the MB-System package.

The first item on each line is the PCS identifier inside brackets, such
as <UTM10N> or <epsg32749>. To specify using one of these PCS's, use
the -J option, e.g. -JUTM10N or -Jepsg32749.

Standard Universal Transverse Mercator (UTM) 
and Universal Polar Stereographic (UPS)
projected coordinate systems:

     <UTM01N> : WGS 84 / UTM zone 1N

     <UTM02N> : WGS 84 / UTM zone 2N

     <UTM03N> : WGS 84 / UTM zone 3N

     <UTM04N> : WGS 84 / UTM zone 4N

     <UTM05N> : WGS 84 / UTM zone 5N

     <UTM06N> : WGS 84 / UTM zone 6N

     <UTM07N> : WGS 84 / UTM zone 7N

     <UTM08N> : WGS 84 / UTM zone 8N

     <UTM09N> : WGS 84 / UTM zone 9N

     <UTM10N> : WGS 84 / UTM zone 10N

     <UTM11N> : WGS 84 / UTM zone 11N

     <UTM12N> : WGS 84 / UTM zone 12N

     <UTM13N> : WGS 84 / UTM zone 13N

     <UTM14N> : WGS 84 / UTM zone 14N

     <UTM15N> : WGS 84 / UTM zone 15N

     <UTM16N> : WGS 84 / UTM zone 16N

     <UTM17N> : WGS 84 / UTM zone 17N

     <UTM18N> : WGS 84 / UTM zone 18N

     <UTM19N> : WGS 84 / UTM zone 19N

     <UTM20N> : WGS 84 / UTM zone 20N

     <UTM21N> : WGS 84 / UTM zone 21N

     <UTM22N> : WGS 84 / UTM zone 22N

     <UTM23N> : WGS 84 / UTM zone 23N

     <UTM24N> : WGS 84 / UTM zone 24N

     <UTM25N> : WGS 84 / UTM zone 25N

     <UTM26N> : WGS 84 / UTM zone 26N

     <UTM27N> : WGS 84 / UTM zone 27N

     <UTM28N> : WGS 84 / UTM zone 28N

     <UTM29N> : WGS 84 / UTM zone 29N

     <UTM30N> : WGS 84 / UTM zone 30N

     <UTM31N> : WGS 84 / UTM zone 31N

     <UTM32N> : WGS 84 / UTM zone 32N

     <UTM33N> : WGS 84 / UTM zone 33N

     <UTM34N> : WGS 84 / UTM zone 34N

     <UTM35N> : WGS 84 / UTM zone 35N

     <UTM36N> : WGS 84 / UTM zone 36N

     <UTM37N> : WGS 84 / UTM zone 37N

     <UTM38N> : WGS 84 / UTM zone 38N

     <UTM39N> : WGS 84 / UTM zone 39N

     <UTM40N> : WGS 84 / UTM zone 40N

     <UTM41N> : WGS 84 / UTM zone 41N

     <UTM42N> : WGS 84 / UTM zone 42N

     <UTM43N> : WGS 84 / UTM zone 43N

     <UTM44N> : WGS 84 / UTM zone 44N

     <UTM45N> : WGS 84 / UTM zone 45N

     <UTM46N> : WGS 84 / UTM zone 46N

     <UTM47N> : WGS 84 / UTM zone 47N

     <UTM48N> : WGS 84 / UTM zone 48N

     <UTM49N> : WGS 84 / UTM zone 49N

     <UTM50N> : WGS 84 / UTM zone 50N

     <UTM51N> : WGS 84 / UTM zone 51N

     <UTM52N> : WGS 84 / UTM zone 52N

     <UTM53N> : WGS 84 / UTM zone 53N

     <UTM54N> : WGS 84 / UTM zone 54N

     <UTM55N> : WGS 84 / UTM zone 55N

     <UTM56N> : WGS 84 / UTM zone 56N

     <UTM57N> : WGS 84 / UTM zone 57N

     <UTM58N> : WGS 84 / UTM zone 58N

     <UTM59N> : WGS 84 / UTM zone 59N

     <UTM60N> : WGS 84 / UTM zone 60N

     <UTM01S> : WGS 84 / UTM zone 1S

     <UTM02S> : WGS 84 / UTM zone 2S

     <UTM03S> : WGS 84 / UTM zone 3S

     <UTM04S> : WGS 84 / UTM zone 4S

     <UTM05S> : WGS 84 / UTM zone 5S

     <UTM06S> : WGS 84 / UTM zone 6S

     <UTM07S> : WGS 84 / UTM zone 7S

     <UTM08S> : WGS 84 / UTM zone 8S

     <UTM09S> : WGS 84 / UTM zone 9S

     <UTM10S> : WGS 84 / UTM zone 10S

     <UTM11S> : WGS 84 / UTM zone 11S

     <UTM12S> : WGS 84 / UTM zone 12S

     <UTM13S> : WGS 84 / UTM zone 13S

     <UTM14S> : WGS 84 / UTM zone 14S

     <UTM15S> : WGS 84 / UTM zone 15S

     <UTM16S> : WGS 84 / UTM zone 16S

     <UTM17S> : WGS 84 / UTM zone 17S

     <UTM18S> : WGS 84 / UTM zone 18S

     <UTM19S> : WGS 84 / UTM zone 19S

     <UTM20S> : WGS 84 / UTM zone 20S

     <UTM21S> : WGS 84 / UTM zone 21S

     <UTM22S> : WGS 84 / UTM zone 22S

     <UTM23S> : WGS 84 / UTM zone 23S

     <UTM24S> : WGS 84 / UTM zone 24S

     <UTM25S> : WGS 84 / UTM zone 25S

     <UTM26S> : WGS 84 / UTM zone 26S

     <UTM27S> : WGS 84 / UTM zone 27S

     <UTM28S> : WGS 84 / UTM zone 28S

     <UTM29S> : WGS 84 / UTM zone 29S

     <UTM30S> : WGS 84 / UTM zone 30S

     <UTM31S> : WGS 84 / UTM zone 31S

     <UTM32S> : WGS 84 / UTM zone 32S

     <UTM33S> : WGS 84 / UTM zone 33S

     <UTM34S> : WGS 84 / UTM zone 34S

     <UTM35S> : WGS 84 / UTM zone 35S

     <UTM36S> : WGS 84 / UTM zone 36S

     <UTM37S> : WGS 84 / UTM zone 37S

     <UTM38S> : WGS 84 / UTM zone 38S

     <UTM39S> : WGS 84 / UTM zone 39S

     <UTM40S> : WGS 84 / UTM zone 40S

     <UTM41S> : WGS 84 / UTM zone 41S

     <UTM42S> : WGS 84 / UTM zone 42S

     <UTM43S> : WGS 84 / UTM zone 43S

     <UTM44S> : WGS 84 / UTM zone 44S

     <UTM45S> : WGS 84 / UTM zone 45S

     <UTM46S> : WGS 84 / UTM zone 46S

     <UTM47S> : WGS 84 / UTM zone 47S

     <UTM48S> : WGS 84 / UTM zone 48S

     <UTM49S> : WGS 84 / UTM zone 49S

     <UTM50S> : WGS 84 / UTM zone 50S

     <UTM51S> : WGS 84 / UTM zone 51S

     <UTM52S> : WGS 84 / UTM zone 52S

     <UTM53S> : WGS 84 / UTM zone 53S

     <UTM54S> : WGS 84 / UTM zone 54S

     <UTM55S> : WGS 84 / UTM zone 55S

     <UTM56S> : WGS 84 / UTM zone 56S

     <UTM57S> : WGS 84 / UTM zone 57S

     <UTM58S> : WGS 84 / UTM zone 58S

     <UTM59S> : WGS 84 / UTM zone 59S

     <UTM60S> : WGS 84 / UTM zone 60S

     <UPSN> : WGS 84 / UPS North

     <UPSS> : WGS 84 / UPS South

State Plane Coordinate Systems using the
North American Datum 1927

     <nad27_101> : alabama east: nad27

     <nad27_102> : alabama west: nad27

     <nad27_5010> : alaska zone no. 10: nad27

     <nad27_5300> : american samoa: nad27

     <nad27_201> : arizona east: nad27

     <nad27_202> : arizona central: nad27

     <nad27_203> : arizona west: nad27

     <nad27_301> : arkansas north: nad27

     <nad27_302> : arkansas south: nad27

     <nad27_401> : california i: nad27

     <nad27_402> : california ii: nad27

     <nad27_403> : california iii: nad27

     <nad27_404> : california iv: nad27

     <nad27_405> : california v: nad27

     <nad27_406> : california vi: nad27

     <nad27_407> : california vii: nad27

     <nad27_501> : colorado north: nad27

     <nad27_502> : colorado central: nad27

     <nad27_503> : colorado south: nad27

     <nad27_600> : connecticut ---: nad27

     <nad27_700> : delaware ---: nad27

     <nad27_901> : florida east: nad27

     <nad27_902> : florida west: nad27

     <nad27_903> : florida north: nad27

     <nad27_1001> : georgia east: nad27

     <nad27_1002> : georgia west: nad27

     <nad27_5101> : hawaii 1: nad27

     <nad27_5102> : hawaii 2: nad27

     <nad27_5103> : hawaii 3: nad27

     <nad27_5104> : hawaii 4: nad27

     <nad27_5105> : hawaii 5: nad27

     <nad27_1101> : idaho east: nad27

     <nad27_1102> : idaho central: nad27

     <nad27_1103> : idaho west: nad27

     <nad27_1201> : illinois east: nad27

     <nad27_1202> : illinois west: nad27

     <nad27_1301> : indiana east: nad27

     <nad27_1302> : indiana west: nad27

     <nad27_1401> : iowa north: nad27

     <nad27_1402> : iowa south: nad27

     <nad27_1501> : kansas north: nad27

     <nad27_1502> : kansas south: nad27

     <nad27_1601> : kentucky north: nad27

     <nad27_1602> : kentucky south: nad27

     <nad27_1701> : louisiana north: nad27

     <nad27_1702> : louisiana south: nad27

     <nad27_1703> : louisiana offshore: nad27

     <nad27_1801> : maine east: nad27

     <nad27_1802> : maine west: nad27

     <nad27_1900> : maryland ---: nad27

     <nad27_2001> : massachusetts mainland: nad27

     <nad27_2002> : massachusetts island: nad27

     <nad27_2101> : michigan east: nad27

     <nad27_2102> : michigan central/m: nad27

     <nad27_2103> : michigan west: nad27

     <nad27_2111> : michigan north: nad27

     <nad27_2112> : michigan central/l: nad27

     <nad27_2113> : michigan south: nad27

     <nad27_2201> : minnesota north: nad27

     <nad27_2202> : minnesota central: nad27

     <nad27_2203> : minnesota south: nad27

     <nad27_2301> : mississippi east: nad27

     <nad27_2302> : mississippi west: nad27

     <nad27_2401> : missouri east: nad27

     <nad27_2402> : missouri central: nad27

     <nad27_2403> : missouri west: nad27

     <nad27_2501> : montana north: nad27

     <nad27_2502> : montana central: nad27

     <nad27_2503> : montana south: nad27

     <nad27_2601> : nebraska north: nad27

     <nad27_2602> : nebraska south: nad27

     <nad27_2701> : nevada east: nad27

     <nad27_2702> : nevada central: nad27

     <nad27_2703> : nevada west: nad27

     <nad27_2800> : new hampshire ---: nad27

     <nad27_2900> : new jersey ---: nad27

     <nad27_3001> : new mexico east: nad27

     <nad27_3002> : new mexico central: nad27

     <nad27_3003> : new mexico west: nad27

     <nad27_3101> : new york east: nad27

     <nad27_3102> : new york central: nad27

     <nad27_3103> : new york west: nad27

     <nad27_3104> : new york long island: nad27

     <nad27_3200> : north carolina ---: nad27

     <nad27_3301> : north dakota north: nad27

     <nad27_3302> : north dakota south: nad27

     <nad27_3401> : ohio north: nad27

     <nad27_3402> : ohio south: nad27

     <nad27_3501> : oklahoma north: nad27

     <nad27_3502> : oklahoma south: nad27

     <nad27_3601> : oregon north: nad27

     <nad27_3602> : oregon south: nad27

     <nad27_3701> : pennsylvania north: nad27

     <nad27_3702> : pennsylvania south: nad27

     <nad27_3800> : rhode island ---: nad27

     <nad27_3901> : south carolina north: nad27

     <nad27_3902> : south carolina south: nad27

     <nad27_4001> : south dakota north: nad27

     <nad27_4002> : south dakota south: nad27

     <nad27_4100> : tennessee ---: nad27

     <nad27_4201> : texas north: nad27

     <nad27_4202> : texas north central: nad27

     <nad27_4203> : texas central: nad27

     <nad27_4204> : texas south central: nad27

     <nad27_4205> : texas south: nad27

     <nad27_4301> : utah north: nad27

     <nad27_4302> : utah central: nad27

     <nad27_4303> : utah south: nad27

     <nad27_4400> : vermont ---: nad27

     <nad27_4501> : virginia north: nad27

     <nad27_4502> : virginia south: nad27

     <nad27_4601> : washington north: nad27

     <nad27_4602> : washington south: nad27

     <nad27_4701> : west virginia north: nad27

     <nad27_4702> : west virginia south: nad27

     <nad27_4801> : wisconsin north: nad27

     <nad27_4802> : wisconsin central: nad27

     <nad27_4803> : wisconsin south: nad27

     <nad27_4901> : wyoming east: nad27

     <nad27_4902> : wyoming east central: nad27

     <nad27_4903> : wyoming west central: nad27

     <nad27_4904> : wyoming west: nad27

     <nad27_5001> : alaska zone no. 1: nad27

     <nad27_5002> : alaska zone no. 2: nad27

     <nad27_5003> : alaska zone no. 3: nad27

     <nad27_5004> : alaska zone no. 4: nad27

     <nad27_5005> : alaska zone no. 5: nad27

     <nad27_5006> : alaska zone no. 6: nad27

     <nad27_5007> : alaska zone no. 7: nad27

     <nad27_5008> : alaska zone no. 8: nad27

     <nad27_5009> : alaska zone no. 9: nad27

     <nad27_5201> : puerto rico and virgin islands: nad27

     <nad27_5202> : virgin islands st. croix: nad27

     <nad27_5400> : guam island: nad27

State Plane Coordinate Systems using the
North American Datum 1983:

     <nad83_101> : alabama east: nad83

     <nad83_102> : alabama west: nad83

     <nad83_5010> : alaska zone no. 10: nad83

     <nad83_201> : arizona east: nad83

     <nad83_202> : arizona central: nad83

     <nad83_203> : arizona west: nad83

     <nad83_301> : arkansas north: nad83

     <nad83_302> : arkansas south: nad83

     <nad83_401> : california i: nad83

     <nad83_402> : california ii: nad83

     <nad83_403> : california iii: nad83

     <nad83_404> : california iv: nad83

     <nad83_405> : california v: nad83

     <nad83_406> : california vi: nad83

     <nad83_501> : colorado north: nad83

     <nad83_502> : colorado central: nad83

     <nad83_503> : colorado south: nad83

     <nad83_600> : connecticut ---: nad83

     <nad83_700> : delaware ---: nad83

     <nad83_901> : florida east: nad83

     <nad83_902> : florida west: nad83

     <nad83_903> : florida north: nad83

     <nad83_1001> : georgia east: nad83

     <nad83_1002> : georgia west: nad83

     <nad83_5101> : hawaii 1: nad83

     <nad83_5102> : hawaii 2: nad83

     <nad83_5103> : hawaii 3: nad83

     <nad83_5104> : hawaii 4: nad83

     <nad83_5105> : hawaii 5: nad83

     <nad83_1101> : idaho east: nad83

     <nad83_1102> : idaho central: nad83

     <nad83_1103> : idaho west: nad83

     <nad83_1201> : illinois east: nad83

     <nad83_1202> : illinois west: nad83

     <nad83_1301> : indiana east: nad83

     <nad83_1302> : indiana west: nad83

     <nad83_1401> : iowa north: nad83

     <nad83_1402> : iowa south: nad83

     <nad83_1501> : kansas north: nad83

     <nad83_1502> : kansas south: nad83

     <nad83_1601> : kentucky north: nad83

     <nad83_1602> : kentucky south: nad83

     <nad83_1701> : louisiana north: nad83

     <nad83_1702> : louisiana south: nad83

     <nad83_1703> : louisiana offshore: nad83

     <nad83_1801> : maine east: nad83

     <nad83_1802> : maine west: nad83

     <nad83_1900> : maryland ---: nad83

     <nad83_2001> : massachusetts mainland: nad83

     <nad83_2002> : massachusetts island: nad83

     <nad83_2111> : michigan north: nad83

     <nad83_2112> : michigan central/l: nad83

     <nad83_2113> : michigan south: nad83

     <nad83_2201> : minnesota north: nad83

     <nad83_2202> : minnesota central: nad83

     <nad83_2203> : minnesota south: nad83

     <nad83_2301> : mississippi east: nad83

     <nad83_2302> : mississippi west: nad83

     <nad83_2401> : missouri east: nad83

     <nad83_2402> : missouri central: nad83

     <nad83_2403> : missouri west: nad83

     <nad83_2500> : montana: nad83

     <nad83_2600> : nebraska: nad83

     <nad83_2701> : nevada east: nad83

     <nad83_2702> : nevada central: nad83

     <nad83_2703> : nevada west: nad83

     <nad83_2800> : new hampshire ---: nad83

     <nad83_2900> : new jersey ---: nad83

     <nad83_3001> : new mexico east: nad83

     <nad83_3002> : new mexico central: nad83

     <nad83_3003> : new mexico west: nad83

     <nad83_3101> : new york east: nad83

     <nad83_3102> : new york central: nad83

     <nad83_3103> : new york west: nad83

     <nad83_3104> : new york long island: nad83

     <nad83_3200> : north carolina ---: nad83

     <nad83_3301> : north dakota north: nad83

     <nad83_3302> : north dakota south: nad83

     <nad83_3401> : ohio north: nad83

     <nad83_3402> : ohio south: nad83

     <nad83_3501> : oklahoma north: nad83

     <nad83_3502> : oklahoma south: nad83

     <nad83_3601> : oregon north: nad83

     <nad83_3602> : oregon south: nad83

     <nad83_3701> : pennsylvania north: nad83

     <nad83_3702> : pennsylvania south: nad83

     <nad83_3800> : rhode island ---: nad83

     <nad83_3900> : south carolina: nad83

     <nad83_4001> : south dakota north: nad83

     <nad83_4002> : south dakota south: nad83

     <nad83_4100> : tennessee ---: nad83

     <nad83_4201> : texas north: nad83

     <nad83_4202> : texas north central: nad83

     <nad83_4203> : texas central: nad83

     <nad83_4204> : texas south central: nad83

     <nad83_4205> : texas south: nad83

     <nad83_4301> : utah north: nad83

     <nad83_4302> : utah central: nad83

     <nad83_4303> : utah south: nad83

     <nad83_4400> : vermont ---: nad83

     <nad83_4501> : virginia north: nad83

     <nad83_4502> : virginia south: nad83

     <nad83_4601> : washington north: nad83

     <nad83_4602> : washington south: nad83

     <nad83_4701> : west virginia north: nad83

     <nad83_4702> : west virginia south: nad83

     <nad83_4801> : wisconsin north: nad83

     <nad83_4802> : wisconsin central: nad83

     <nad83_4803> : wisconsin south: nad83

     <nad83_4901> : wyoming east: nad83

     <nad83_4902> : wyoming east central: nad83

     <nad83_4903> : wyoming west central: nad83

     <nad83_4904> : wyoming west: nad83

     <nad83_5001> : alaska zone no. 1: nad83

     <nad83_5002> : alaska zone no. 2: nad83

     <nad83_5003> : alaska zone no. 3: nad83

     <nad83_5004> : alaska zone no. 4: nad83

     <nad83_5005> : alaska zone no. 5: nad83

     <nad83_5006> : alaska zone no. 6: nad83

     <nad83_5007> : alaska zone no. 7: nad83

     <nad83_5008> : alaska zone no. 8: nad83

     <nad83_5009> : alaska zone no. 9: nad83

     <nad83_5200> : puerto rico and virgin islands: nad83

Various Non-U.S. Coordinate Systems,

     <CH1903> : Swiss Coordinate System

     <madagascar> : Laborde grid for Madagascar

     <new_zealand> : New Zealand Map Grid (NZMG)

     <bwi> : British West Indies

     <costa-n> : Costa Rica Norte

     <costa-s> : Costa Rica Sud

     <cuba-n> : Cuba Norte

     <cuba-s> : Cuba Sud

     <domin_rep> : Dominican Republic

     <egypt-1> : Egypt

     <egypt-2> : Egypt

     <egypt-3> : Egypt

     <egypt-4> : Egypt

     <egypt-5> : Egypt

     <el_sal> : El Salvador

     <guat-n> : Guatemala Norte

     <guat-s> : Guatemala Sud

     <haiti> : Haiti

     <hond-n> : Honduras Norte

     <hond-s> : Honduras Sud

     <levant> : Levant

     <nica-n> : Nicaragua Norte

     <nica-s> : Nicaragua Sud

     <nw-africa> : Northwest Africa

     <palestine> : Palestine

     <panama> : Panama

     <bng> : British National Grid

     <malay> : West Malaysian RSO Grid

     <india-I> : India Zone I

     <india-IIA> : India Zone IIA

     <india-IIB> : India Zone IIB

     <india-IIIA> : India Zone IIIA

     <india-IIIB> : India Zone IIIB

     <india-IVA> : India Zone IVA

     <india-IVB> : India Zone IVB

     <ceylon> : Ceylon Belt

     <irish> : Irish Transverse Mercator Grid

     <neiez> : Netherlands East Indies Equitorial Zone

     <n-alger> : Nord Algerie Grid

     <n-maroc> : Nord Maroc Grid

     <n-tunis> : Nord Tunisie Grid

     <s-alger> : Sud Algerie Grid

     <s-maroc> : Sud Maroc Grid

     <s-tunis> : Sud Tunisie Grid

     <gk2-d> : Gauss Krueger Grid for Germany

     <gk3-d> : Gauss Krueger Grid for Germany

     <gk4-d> : Gauss Krueger Grid for Germany

Great Lakes Coordinate Systems,

     <erie-etal> : Lake Erie, Ontario and St. Lawrence River.

     <huron> : Lake Huron

     <michigan> : Lake Michigan

     <superior> : Lake Superior, Lake of the Woods

European Petroleum Survey Group (EPSG) Coordinate System Definitions

     <epsg200> : Anguilla 1957 / British West Indies Grid

     <epsg201> : Antigua 1943 / British West Indies Grid

     <epsg202> : Dominica 1945 / British West Indies Grid

     <epsg203> : Grenada 1953 / British West Indies Grid

     <epsg204> : Montserrat 58 / British West Indies Grid

     <epsg205> : St Kitts 1955 / British West Indies Grid

     <epsg206> : St Lucia 1955 / British West Indies Grid

     <epsg207> : St Vincent 45 / British West Indies Grid

     <epsg208> : NAD27(CGQ77) / SCoPQ zone 2

     <epsg209> : NAD27(CGQ77) / SCoPQ zone 3

     <epsg210> : NAD27(CGQ77) / SCoPQ zone 4

     <epsg211> : NAD27(CGQ77) / SCoPQ zone 5

     <epsg212> : NAD27(CGQ77) / SCoPQ zone 6

     <epsg213> : NAD27(CGQ77) / SCoPQ zone 7

     <epsg214> : NAD27(CGQ77) / SCoPQ zone 8

     <epsg215> : NAD27(CGQ77) / SCoPQ zone 9

     <epsg216> : NAD27(CGQ77) / SCoPQ zone 10

     <epsg217> : NAD27(76) / MTM zone 8

     <epsg218> : NAD27(76) / MTM zone 9

     <epsg219> : NAD27(76) / MTM zone 10

     <epsg220> : NAD27(76) / MTM zone 11

     <epsg221> : NAD27(76) / MTM zone 12

     <epsg222> : NAD27(76) / MTM zone 13

     <epsg223> : NAD27(76) / MTM zone 14

     <epsg224> : NAD27(76) / MTM zone 15

     <epsg225> : NAD27(76) / MTM zone 16

     <epsg226> : NAD27(76) / MTM zone 17

     <epsg227> : NAD27(76) / UTM zone 15N

     <epsg228> : NAD27(76) / UTM zone 16N

     <epsg229> : NAD27(76) / UTM zone 17N

     <epsg230> : NAD27(76) / UTM zone 18N

     <epsg231> : NAD27(CGQ77) / UTM zone 17N

     <epsg232> : NAD27(CGQ77) / UTM zone 18N

     <epsg233> : NAD27(CGQ77) / UTM zone 19N

     <epsg234> : NAD27(CGQ77) / UTM zone 20N

     <epsg235> : NAD27(CGQ77) / UTM zone 21N

     <epsg236> : NAD83(CSRS98) / New Brunswick Stereo

     <epsg237> : NAD83(CSRS98) / UTM zone 19N

     <epsg238> : NAD83(CSRS98) / UTM zone 20N

     <epsg239> : Israel / Israeli TM Grid

     <epsg240> : Locodjo 1965 / UTM zone 30N

     <epsg241> : Abidjan 1987 / UTM zone 30N

     <epsg242> : Locodjo 1965 / UTM zone 29N

     <epsg243> : Abidjan 1987 / UTM zone 29N

     <epsg244> : Hanoi 1972 / Gauss-Kruger zone 18

     <epsg245> : Hanoi 1972 / Gauss-Kruger zone 19

     <epsg256> : CH1903+ / LV95

     <epsg257> : Rassadiran / Nakhl e Taqi

     <epsg258> : ED50(ED77) / UTM zone 38N

     <epsg259> : ED50(ED77) / UTM zone 39N

     <epsg260> : ED50(ED77) / UTM zone 40N

     <epsg261> : ED50(ED77) / UTM zone 41N

     <epsg2100> : GGRS87 / Greek Grid

     <epsg2200> : ATS77 / New Brunswick Stereographic

     <epsg2219> : ATS77 / UTM zone 19N

     <epsg2220> : ATS77 / UTM zone 20N

     <epsg2290> : ATS77 / Prince Edward Isl. Stereographic

     <epsg2294> : ATS77 / MTM Nova Scotia zone 4

     <epsg2295> : ATS77 / MTM Nova Scotia zone 5

     <epsg2391> : KKJ / Finland zone 1

     <epsg2392> : KKJ / Finland zone 2

     <epsg2393> : KKJ / Finland Uniform Coordinate System

     <epsg2394> : KKJ / Finland zone 4

     <epsg2400> : RT90 2.5 gon W

     <epsg2550> : Samboja / UTM zone 50S

     <epsg2600> : Lietuvos Koordinoei Sistema 1994

     <epsg2736> : Tete / UTM zone 36S

     <epsg2737> : Tete / UTM zone 37S

     <epsg3036> : Moznet / UTM zone 36S

     <epsg3037> : Moznet / UTM zone 37S

     <epsg3148> : Indian 1960 / UTM zone 48N

     <epsg3149> : Indian 1960 / UTM zone 49N

     <epsg3176> : Indian 1960 / TM 106 NE

     <epsg3300> : Estonian Coordinate System of 1992

     <epsg3439> : PSD93 / UTM zone 39N

     <epsg3440> : PSD93 / UTM zone 40N

     <epsg3561> : Old Hawaiian / Hawaii zone 1

     <epsg3562> : Old Hawaiian / Hawaii zone 2

     <epsg3563> : Old Hawaiian / Hawaii zone 3

     <epsg3564> : Old Hawaiian / Hawaii zone 4

     <epsg3565> : Old Hawaiian / Hawaii zone 5

     <epsg3920> : Puerto Rico / UTM zone 20N

     <epsg3991> : Puerto Rico State Plane CS of 1927

     <epsg3992> : Puerto Rico / St. Croix

     <epsg4001> : Unknown datum based upon ellipsoid 7001

     <epsg4002> : Unknown datum based upon ellipsoid 7002

     <epsg4003> : Unknown datum based upon ellipsoid 7003

     <epsg4004> : Unknown datum based upon ellipsoid 7004

     <epsg4005> : Unknown datum based upon ellipsoid 7005

     <epsg4006> : Unknown datum based upon ellipsoid 7006

     <epsg4007> : Unknown datum based upon ellipsoid 7007

     <epsg4008> : Unknown datum based upon ellipsoid 7008

     <epsg4009> : Unknown datum based upon ellipsoid 7009

     <epsg4010> : Unknown datum based upon ellipsoid 7010

     <epsg4011> : Unknown datum based upon ellipsoid 7011

     <epsg4012> : Unknown datum based upon ellipsoid 7012

     <epsg4013> : Unknown datum based upon ellipsoid 7013

     <epsg4014> : Unknown datum based upon ellipsoid 7014

     <epsg4015> : Unknown datum based upon ellipsoid 7015

     <epsg4016> : Unknown datum based upon ellipsoid 7016

     <epsg4017> : Unknown datum based upon ellipsoid 7017

     <epsg4018> : Unknown datum based upon ellipsoid 7018

     <epsg4019> : Unknown datum based upon ellipsoid 7019

     <epsg4020> : Unknown datum based upon ellipsoid 7020

     <epsg4021> : Unknown datum based upon ellipsoid 7021

     <epsg4022> : Unknown datum based upon ellipsoid 7022

     <epsg4024> : Unknown datum based upon ellipsoid 7024

     <epsg4025> : Unknown datum based upon ellipsoid 7025

     <epsg4027> : Unknown datum based upon ellipsoid 7027

     <epsg4028> : Unknown datum based upon ellipsoid 7028

     <epsg4029> : Unknown datum based upon ellipsoid 7029

     <epsg4030> : Unknown datum based upon ellipsoid 7030

     <epsg4031> : Unknown datum based upon ellipsoid 7031

     <epsg4032> : Unknown datum based upon ellipsoid 7032

     <epsg4033> : Unknown datum based upon ellipsoid 7033

     <epsg4034> : Unknown datum based upon ellipsoid 7034

     <epsg4035> : Unknown datum based upon ellipsoid 7035

     <epsg4036> : Unknown datum based upon ellipsoid 7036

     <epsg4041> : Unknown datum based upon ellipsoid 7041

     <epsg4042> : Unknown datum based upon ellipsoid 7042

     <epsg4043> : Unknown datum based upon ellipsoid 7043

     <epsg4044> : Unknown datum based upon ellipsoid 7044

     <epsg4045> : Unknown datum based upon ellipsoid 7045

     <epsg4120> : Greek

     <epsg4121> : GGRS87

     <epsg4122> : ATS77

     <epsg4123> : KKJ

     <epsg4124> : RT90

     <epsg4125> : Samboja

     <epsg4126> : LKS94 (ETRS89)

     <epsg4127> : Tete

     <epsg4128> : Madzansua

     <epsg4129> : Observatario

     <epsg4130> : Moznet

     <epsg4131> : Indian 1960

     <epsg4132> : FD58

     <epsg4133> : EST92

     <epsg4134> : PDO Survey Datum 1993

     <epsg4135> : Old Hawaiian

     <epsg4136> : St. Lawrence Island

     <epsg4137> : St. Paul Island

     <epsg4138> : St. George Island

     <epsg4139> : Puerto Rico

     <epsg4140> : NAD83(CSRS98)

     <epsg4141> : Israel

     <epsg4142> : Locodjo 1965

     <epsg4143> : Abidjan 1987

     <epsg4144> : Kalianpur 1937

     <epsg4145> : Kalianpur 1962

     <epsg4146> : Kalianpur 1975

     <epsg4147> : Hanoi 1972

     <epsg4148> : Hartbeesthoek94

     <epsg4149> : CH1903

     <epsg4150> : CH1903+

     <epsg4151> : CHTRF95

     <epsg4152> : NAD83(HARN)

     <epsg4153> : Rassadiran

     <epsg4154> : ED50(ED77)

     <epsg4200> : Pulkovo 1995

     <epsg4201> : Adindan

     <epsg4202> : AGD66

     <epsg4203> : AGD84

     <epsg4204> : Ain el Abd

     <epsg4205> : Afgooye

     <epsg4206> : Agadez

     <epsg4207> : Lisbon

     <epsg4208> : Aratu

     <epsg4209> : Arc 1950

     <epsg4210> : Arc 1960

     <epsg4211> : Batavia

     <epsg4212> : Barbados 1938

     <epsg4213> : Beduaram

     <epsg4214> : Beijing 1954

     <epsg4215> : Belge 1950

     <epsg4216> : Bermuda 1957

     <epsg4218> : Bogota

     <epsg4219> : Bukit Rimpah

     <epsg4220> : Camacupa

     <epsg4221> : Campo Inchauspe

     <epsg4222> : Cape

     <epsg4223> : Carthage

     <epsg4224> : Chua

     <epsg4225> : Corrego Alegre

     <epsg4226> : Cote d'Ivoire

     <epsg4227> : Deir ez Zor

     <epsg4228> : Douala

     <epsg4229> : Egypt 1907

     <epsg4230> : ED50

     <epsg4231> : ED87

     <epsg4232> : Fahud

     <epsg4233> : Gandajika 1970

     <epsg4234> : Garoua

     <epsg4235> : Guyane Francaise

     <epsg4236> : Hu Tzu Shan

     <epsg4237> : HD72

     <epsg4238> : ID74

     <epsg4239> : Indian 1954

     <epsg4240> : Indian 1975

     <epsg4241> : Jamaica 1875

     <epsg4242> : JAD69

     <epsg4243> : Kalianpur 1880

     <epsg4244> : Kandawala

     <epsg4245> : Kertau

     <epsg4246> : KOC

     <epsg4247> : La Canoa

     <epsg4248> : PSAD56

     <epsg4249> : Lake

     <epsg4250> : Leigon

     <epsg4251> : Liberia 1964

     <epsg4252> : Lome

     <epsg4253> : Luzon 1911

     <epsg4254> : Hito XVIII 1963

     <epsg4255> : Herat North

     <epsg4256> : Mahe 1971

     <epsg4257> : Makassar

     <epsg4258> : ETRF89

     <epsg4259> : Malongo 1987

     <epsg4260> : Manoca

     <epsg4261> : Merchich

     <epsg4262> : Massawa

     <epsg4263> : Minna

     <epsg4264> : Mhast

     <epsg4265> : Monte Mario

     <epsg4266> : M'poraloko

     <epsg4267> : NAD27

     <epsg4268> : NAD27 Michigan

     <epsg4269> : NAD83

     <epsg4270> : Nahrwan 1967

     <epsg4271> : Naparima 1972

     <epsg4272> : GD49

     <epsg4273> : NGO 1948

     <epsg4274> : Datum 73

     <epsg4275> : NTF

     <epsg4276> : NSWC 9Z-2

     <epsg4277> : OSGB 1936

     <epsg4278> : OSGB70

     <epsg4279> : OS(SN)80

     <epsg4280> : Padang

     <epsg4281> : Palestine 1923

     <epsg4282> : Pointe Noire

     <epsg4283> : GDA94

     <epsg4284> : Pulkovo 1942

     <epsg4285> : Qatar

     <epsg4286> : Qatar 1948

     <epsg4287> : Qornoq

     <epsg4288> : Loma Quintana

     <epsg4289> : Amersfoort

     <epsg4291> : SAD69

     <epsg4292> : Sapper Hill 1943

     <epsg4293> : Schwarzeck

     <epsg4294> : Segora

     <epsg4295> : Serindung

     <epsg4296> : Sudan

     <epsg4297> : Tananarive

     <epsg4298> : Timbalai 1948

     <epsg4299> : TM65

     <epsg4300> : TM75

     <epsg4301> : Tokyo

     <epsg4302> : Trinidad 1903

     <epsg4303> : TC(1948)

     <epsg4304> : Voirol 1875

     <epsg4305> : Voirol Unifie

     <epsg4306> : Bern 1938

     <epsg4307> : Nord Sahara 1959

     <epsg4308> : RT38

     <epsg4309> : Yacare

     <epsg4310> : Yoff

     <epsg4311> : Zanderij

     <epsg4312> : MGI

     <epsg4313> : Belge 1972

     <epsg4314> : DHDN

     <epsg4315> : Conakry 1905

     <epsg4316> : Dealul Piscului 1933

     <epsg4317> : Dealul Piscului 1970

     <epsg4318> : NGN

     <epsg4319> : KUDAMS

     <epsg4322> : WGS 72

     <epsg4324> : WGS 72BE

     <epsg4326> : WGS 84

     <epsg4600> : Anguilla 1957

     <epsg4601> : Antigua 1943

     <epsg4602> : Dominica 1945

     <epsg4603> : Grenada 1953

     <epsg4604> : Montserrat 1958

     <epsg4605> : St. Kitts 1955

     <epsg4606> : St. Lucia 1955

     <epsg4607> : St. Vincent 1945

     <epsg4608> : NAD27(76)

     <epsg4609> : NAD27(CGQ77)

     <epsg4801> : Bern 1898 (Bern)

     <epsg4802> : Bogota (Bogota)

     <epsg4803> : Lisbon (Lisbon)

     <epsg4804> : Makassar (Jakarta)

     <epsg4805> : MGI (Ferro)

     <epsg4806> : Monte Mario (Rome)

     <epsg4807> : NTF (Paris)

     <epsg4808> : Padang (Jakarta)

     <epsg4809> : Belge 1950 (Brussels)

     <epsg4810> : Tananarive (Paris)

     <epsg4811> : Voirol 1875 (Paris)

     <epsg4812> : Voirol Unifie (Paris)

     <epsg4813> : Batavia (Jakarta)

     <epsg4814> : RT38 (Stockholm)

     <epsg4815> : Greek (Athens)

     <epsg4816> : Carthage (Paris)

     <epsg4817> : NGO 1948 (Oslo)

     <epsg4901> : ATF (Paris)

     <epsg4902> : NDG (Paris)

     <epsg4903> : Madrid 1870 (Madrid)

     <epsg20004> : Pulkovo 1995 / Gauss-Kruger zone 4

     <epsg20005> : Pulkovo 1995 / Gauss-Kruger zone 5

     <epsg20006> : Pulkovo 1995 / Gauss-Kruger zone 6

     <epsg20007> : Pulkovo 1995 / Gauss-Kruger zone 7

     <epsg20008> : Pulkovo 1995 / Gauss-Kruger zone 8

     <epsg20009> : Pulkovo 1995 / Gauss-Kruger zone 9

     <epsg20010> : Pulkovo 1995 / Gauss-Kruger zone 10

     <epsg20011> : Pulkovo 1995 / Gauss-Kruger zone 11

     <epsg20012> : Pulkovo 1995 / Gauss-Kruger zone 12

     <epsg20013> : Pulkovo 1995 / Gauss-Kruger zone 13

     <epsg20014> : Pulkovo 1995 / Gauss-Kruger zone 14

     <epsg20015> : Pulkovo 1995 / Gauss-Kruger zone 15

     <epsg20016> : Pulkovo 1995 / Gauss-Kruger zone 16

     <epsg20017> : Pulkovo 1995 / Gauss-Kruger zone 17

     <epsg20018> : Pulkovo 1995 / Gauss-Kruger zone 18

     <epsg20019> : Pulkovo 1995 / Gauss-Kruger zone 19

     <epsg20020> : Pulkovo 1995 / Gauss-Kruger zone 20

     <epsg20021> : Pulkovo 1995 / Gauss-Kruger zone 21

     <epsg20022> : Pulkovo 1995 / Gauss-Kruger zone 22

     <epsg20023> : Pulkovo 1995 / Gauss-Kruger zone 23

     <epsg20024> : Pulkovo 1995 / Gauss-Kruger zone 24

     <epsg20025> : Pulkovo 1995 / Gauss-Kruger zone 25

     <epsg20026> : Pulkovo 1995 / Gauss-Kruger zone 26

     <epsg20027> : Pulkovo 1995 / Gauss-Kruger zone 27

     <epsg20028> : Pulkovo 1995 / Gauss-Kruger zone 28

     <epsg20029> : Pulkovo 1995 / Gauss-Kruger zone 29

     <epsg20030> : Pulkovo 1995 / Gauss-Kruger zone 30

     <epsg20031> : Pulkovo 1995 / Gauss-Kruger zone 31

     <epsg20032> : Pulkovo 1995 / Gauss-Kruger zone 32

     <epsg20064> : Pulkovo 1995 / Gauss-Kruger 4N

     <epsg20065> : Pulkovo 1995 / Gauss-Kruger 5N

     <epsg20066> : Pulkovo 1995 / Gauss-Kruger 6N

     <epsg20067> : Pulkovo 1995 / Gauss-Kruger 7N

     <epsg20068> : Pulkovo 1995 / Gauss-Kruger 8N

     <epsg20069> : Pulkovo 1995 / Gauss-Kruger 9N

     <epsg20070> : Pulkovo 1995 / Gauss-Kruger 10N

     <epsg20071> : Pulkovo 1995 / Gauss-Kruger 11N

     <epsg20072> : Pulkovo 1995 / Gauss-Kruger 12N

     <epsg20073> : Pulkovo 1995 / Gauss-Kruger 13N

     <epsg20074> : Pulkovo 1995 / Gauss-Kruger 14N

     <epsg20075> : Pulkovo 1995 / Gauss-Kruger 15N

     <epsg20076> : Pulkovo 1995 / Gauss-Kruger 16N

     <epsg20077> : Pulkovo 1995 / Gauss-Kruger 17N

     <epsg20078> : Pulkovo 1995 / Gauss-Kruger 18N

     <epsg20079> : Pulkovo 1995 / Gauss-Kruger 19N

     <epsg20080> : Pulkovo 1995 / Gauss-Kruger 20N

     <epsg20081> : Pulkovo 1995 / Gauss-Kruger 21N

     <epsg20082> : Pulkovo 1995 / Gauss-Kruger 22N

     <epsg20083> : Pulkovo 1995 / Gauss-Kruger 23N

     <epsg20084> : Pulkovo 1995 / Gauss-Kruger 24N

     <epsg20085> : Pulkovo 1995 / Gauss-Kruger 25N

     <epsg20086> : Pulkovo 1995 / Gauss-Kruger 26N

     <epsg20087> : Pulkovo 1995 / Gauss-Kruger 27N

     <epsg20088> : Pulkovo 1995 / Gauss-Kruger 28N

     <epsg20089> : Pulkovo 1995 / Gauss-Kruger 29N

     <epsg20090> : Pulkovo 1995 / Gauss-Kruger 30N

     <epsg20091> : Pulkovo 1995 / Gauss-Kruger 31N

     <epsg20092> : Pulkovo 1995 / Gauss-Kruger 32N

     <epsg20137> : Adindan / UTM zone 37N

     <epsg20138> : Adindan / UTM zone 38N

     <epsg20248> : AGD66 / AMG zone 48

     <epsg20249> : AGD66 / AMG zone 49

     <epsg20250> : AGD66 / AMG zone 50

     <epsg20251> : AGD66 / AMG zone 51

     <epsg20252> : AGD66 / AMG zone 52

     <epsg20253> : AGD66 / AMG zone 53

     <epsg20254> : AGD66 / AMG zone 54

     <epsg20255> : AGD66 / AMG zone 55

     <epsg20256> : AGD66 / AMG zone 56

     <epsg20257> : AGD66 / AMG zone 57

     <epsg20258> : AGD66 / AMG zone 58

     <epsg20348> : AGD84 / AMG zone 48

     <epsg20349> : AGD84 / AMG zone 49

     <epsg20350> : AGD84 / AMG zone 50

     <epsg20351> : AGD84 / AMG zone 51