Hi, Spherical Cross-track Height (SCH) coordinate system support was added to PROJ.4 about a couple of months ago. This is widely used for processing radar remote sensing data, particularly for the NASA radar missions. I have tried to include support for this coordinate system in GDAL by defining new OGR SRS parameters.
You can find the change log here: https://github.com/piyushrpt/gdal/commit/7e8f3c56367689fd4048063a5d0e2cd15a 93293b Example output of gdalsrsinfo look's like this: > gdalsrsinfo "+proj=sch +plat_0=30.3 +plon_0=45.1 +phdg_0=-12.2 >+datum=WGS84" PROJ.4 : '+proj=sch +plat_0=30.3 +plon_0=45.1 +phdg_0=-12.2 +h_0=0 +datum=WGS84 +units=m +no_defs ' OGC WKT : PROJCS["unnamed", 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["Spherical_Cross_Track_Height"], PARAMETER["peg_point_latitude",30.3], PARAMETER["peg_point_longitude",45.1], PARAMETER["peg_point_heading",-12.2], PARAMETER["peg_point_height",0]] This is my first time working with OGR parameters. Any comments/ suggestions for improvements are welcome. I hope to issue a pull request once the changes conform with established conventions. Thanks Piyush _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
