All project data are from different sources, and normally I have no difficulties importing them to GRASS, then reprojecting various maps to the desired project location. This project is being obdurate and I'm out of ideas on how to resolve the issue.
Now I am working with three map themes: Public Land Survey System (PLSS; the Townships/Ranges/Sections at scale of 1:24K); Hydrography (HUC at 12-digit, subwatershed, level at scale of 1:24K from the National Hydrographic Database); and DEM (3m at scale of 1:24K from the National Elevation Dataset). Following is the projection information from the source files: PLSS (.e00): Projection LAMBERT Datum NAD83 Zunits NO Units 3.2808400000 Spheroid GRS1980 Xshift 0.0000000000 Yshift 0.0000000000 Parameters 43 0 0.000 /* 1st standard parallel 45 30 0.000 /* 2nd standard parallel -120 30 0.000 /* central meridian 41 45 0.000 /* latitude of projection's origin 400000.00000 /* false easting (meters) 0.00000 /* false northing (meters) HUC12 (.prj): StatePlane_Washington_North FIPS 4601 NAD83 GRS80 PROJECTION Lambert_Conformal_Conic False_Easting 500000.0 False_Northing 0.0 Central_Meridian -120.8333333333333 Standard_Parallel_1 47.5 Standard_Parallel_2 48.73333333333333 Latitude_Of_Origin 47.0 UNIT Meter, 1.0 DEM (.tif): UTM Zone 11 NAD83 GRS80 Bounds West -118.86004 East -118.10445 North 49.00047 South 47.83036 UNITS Either Degrees or Meters I created a separate location for each and imported the data (multiple DEM and hydrography files). The project location is in State Plane Coordinate System, Washington North, NAD83, with units of US feet and created using .shp files of a project theme provided by my client: name: Lambert Conformal Conic proj: lcc datum: nad83 ellps: grs80 lat_1: 47.5 lat_2: 48.73333333333333 lat_0: 47 lon_0: -120.8333333333333 x_0: 500000.0000000001 y_0: 0 no_defs: defined unit: Foot_US units: Foot_US meters: 0.3048006096012192 Using v.proj, I re-projected the PLSS and HUC12 coverages, but the two are separated by a rather large gap on the map display with the former to the left. When I try to apply r.proj to bring in the DEM I'm told the region is outside that of the current location. I don't see what I've done differently than I have with other projects where I did not have these issues. What process should I apply to re-import these source maps so they all overlap in the same coordinate system and units? TIA, Rich _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
