Hi John, No guarantees that I got this right, but you could try adding the following entry to your "FWTools/share/proj/epsg" file:
# Guatemala Transverse Mercator <001234> +proj=tmerc +x_0=500000.000000 +y_0=0 +lon_0=-90.5 +lat_0=0 +k=0.999800 +ellps=WGS84 +datum=WGS84 +to_meter=0.3048006096012192 +no_defs <> Then you should be able to acces it by using "EPSG:001234" in your -s_srs parameters. Roger -- On Mon, Oct 6, 2008 at 7:10 AM, John Mitchell <[EMAIL PROTECTED]>wrote: > Hi, > > How would I create an epsg code that can be used within the epsg file for > fwtools and MapServer? > > Below is the information that I would like to use to create an epsg code. > What would be format for the new epsg code? Is the information listed below > enough to create an epsg code and if not what am I missing? > > > *The 2001 data was originally in a Guatemalan Transverse Mercator > coordinate > system with the parameters shown below: > > Projection: Transverse Mercator > False Easting: 500000.000000 > False Northing: 0.000000 > Central Meridian: -90.500000 > Scale Factor: 0.999800 > Latitude of Origin: 0.0000000 > Linear Unit: Meter > Geographic Coordinate System: GCS_WGS_1984 > > *Below is the gdalinfo listing for one of files that I would like to > associate to this new epsg code: > > *Driver: GTiff/GeoTIFF > Size is 11214, 7860 > Coordinate System is `' > Origin = (317049.000000000000000,**1659460.000000000000000) > Pixel Size = (0.500000000000000,-0.**500000000000000) > Metadata: > AREA_OR_POINT=Area > TIFFTAG_SOFTWARE=ERDAS IMAGINE > TIFFTAG_XRESOLUTION=1 > TIFFTAG_YRESOLUTION=1 > TIFFTAG_RESOLUTIONUNIT=1 (unitless) > Corner Coordinates: > Upper Left ( 317049.000, 1659460.000) > Lower Left ( 317049.000, 1655530.000) > Upper Right ( 322656.000, 1659460.000) > Lower Right ( 322656.000, 1655530.000) > Center ( 319852.500, 1657495.000) > Band 1 Block=11214x8 Type=Byte, ColorInterp=Red > Band 2 Block=11214x8 Type=Byte, ColorInterp=Green > Band 3 Block=11214x8 Type=Byte, ColorInterp=Blue* > > > > Thanks, > > -- > John J. Mitchell > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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