> On Jun 7, 2015, at 1:16 PM, Andre Joost <[email protected]> wrote: > > Am 07.06.2015 um 18:50 schrieb Doug McCorkle: >> Hello, >> >> I am trying to add this projection to our runtime environment: >> >> PROJCS["USA_Contiguous_Albers_Equal_Area_Conic_USGS_version", >> GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", >> SPHEROID["GRS_1980",6378137.0,298.257222101]], >> PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433], >> AUTHORITY["EPSG","4269"]], PROJECTION["Albers_Conic_Equal_Area"], >> PARAMETER["False_Easting",0.0], PARAMETER["False_Northing",0.0], >> PARAMETER["Central_Meridian",-96.0], >> PARAMETER["Standard_Parallel_1",29.5], >> PARAMETER["Standard_Parallel_2",45.5], >> PARAMETER["Latitude_Of_Origin",23.0], UNIT["Meter",1.0], >> AUTHORITY["EPSG","102039”]] >> > >> When I try to validate the projection I get this in the debug >> output: >> >> OGRSpatialReference::Validate: PARAMETER Central_Meridian for >> PROJECTION Albers_Conic_Equal_Area is an alias for >> longitude_of_center. >> >> I am unsure of what to do with this debug information to correct the >> definition. This is the proj4 definition: >> >> # USA Contiguous Albers Equal Area Conic USGS version <102039> >> +proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23.0 +lon_0=-96 +x_0=0 >> +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs <> >> > > If you run gdalsrsinfo on this proj.4 string, you get the following WKT > output: > > PROJCS["unnamed", > GEOGCS["NAD83", > DATUM["North_American_Datum_1983", > SPHEROID["GRS 1980",6378137,298.257222101, > AUTHORITY["EPSG","7019"]], > TOWGS84[0,0,0,0,0,0,0], > AUTHORITY["EPSG","6269"]], > PRIMEM["Greenwich",0, > AUTHORITY["EPSG","8901"]], > UNIT["degree",0.0174532925199433, > AUTHORITY["EPSG","9108"]], > AUTHORITY["EPSG","4269"]], > PROJECTION["Albers_Conic_Equal_Area"], > PARAMETER["standard_parallel_1",29.5], > PARAMETER["standard_parallel_2",45.5], > PARAMETER["latitude_of_center",23], > PARAMETER["longitude_of_center",-96], > PARAMETER["false_easting",0], > PARAMETER["false_northing",0], > UNIT["Meter",1]] > > So it is really a matter of naming the same parameter. Using > longitude_of_center will make all GDAL-dependent software happy, while the > Central_Meridian might be invoked by ESRI. > > See also > http://www.remotesensing.org/geotiff/proj_list/albers_equal_area_conic.html > for the official OGC WKT parameter names.
Andre, Perfect! Thanks for the quick response and tip. Doug _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
