Etienne, Potentially something similar could be accomplished with an -srsformat option to gdalinfo. I will also note that the existing *unsupported* "testepsg" utility will report an SRS in all known formats and has a few other options.
If you did check in a gdalsrsinfo utility, I'd suggest you have a way of taking the input SRS definition from the commandline instead of from a file. Best regards, On Sun, Oct 16, 2011 at 5:38 PM, Etienne Tourigny <[email protected]> wrote: > I have written a small utility app that I think would make a nice > addition to the GDAL Utilities. > > gdalsrsinfo (provisional name) processes an input SRS definition (or > dataset) and outputs the SRS definition in one or all of the formats > which GDAL can export to (WKT, PROJ.4, ESRI WKT, mapserver, xml). > > It accepts a valid GDAL dataset or any of the usual GDAL/OGR forms. It > could be extended to accept OGR datasets (already supports .prj > files). > > In my opinion it is useful because it allows easy access to the > different SRS forms supported by GDAL and conversions between those > forms. > >> gdalsrsinfo -h > > Usage: gdalsrsinfo [options] srs_def > > srs_def may be the filename of a dataset from which to extract SRS information > OR any of the usual GDAL/OGR forms > (complete WKT, PROJ.4, EPSG:n or a file containing the SRS) > > Options: > [--help-general] [-h] Show help and exit > [-p] Pretty-print where applicable (e.g. WKT) > [-s] Be as silent as possible > [-o out_type] Output type {all,proj4,wkt,esri,mapinfo,xml} > > > Please give me your opinion on this, and if I should go ahead and > commit it to svn trunk. Also what name it should have. > > Attaching source code and modified GNUMakefile to build. It is written > in c to make it easily available to all GDAL installations. > > Regards, Etienne > > Posting some examples: > >> ./gdalsrsinfo -o all landsat.tif > > PROJ.4 : '+proj=utm +zone=19 +south +datum=WGS84 +units=m +no_defs ' > > OGC WKT : > PROJCS["WGS 84 / UTM zone 19S",GEOGCS["WGS > 84",DATUM["WGS_1984",SPHEROID["WGS > 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-69],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","32719"]] > > ESRI WKT : > PROJCS["WGS_1984_UTM_Zone_19S",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-69],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["Meter",1]] > > MAPINFO : 'Earth Projection 8, 104, "m", -69, 0, 0.9996, 500000, 10000000' > > >> ./gdalsrsinfo -o proj4 "EPSG:32722" > > PROJ.4 : '+proj=utm +zone=22 +south +datum=WGS84 +units=m +no_defs ' > >> ./gdalsrsinfo -o wkt -s "EPSG:32722" > > PROJCS["WGS 84 / UTM zone 22S",GEOGCS["WGS > 84",DATUM["WGS_1984",SPHEROID["WGS > 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-51],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32722"]] > > >> ./gdalsrsinfo -o wkt -p "EPSG:4326" > > OGC WKT : > GEOGCS["WGS 84", > DATUM["WGS_1984", > SPHEROID["WGS 84",6378137,298.257223563, > AUTHORITY["EPSG","7030"]], > AUTHORITY["EPSG","6326"]], > PRIMEM["Greenwich",0, > AUTHORITY["EPSG","8901"]], > UNIT["degree",0.0174532925199433, > AUTHORITY["EPSG","9122"]], > AUTHORITY["EPSG","4326"]] > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Software Developer _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
