[GRASS-user] r.proj: fixing a failure
Rich Shepard
rshepard at appl-ecosys.com
Mon Dec 21 21:42:54 EST 2009
Trying to bring in the raster DEM to the project location, but r.proj
fails because of a difference in false eastings:
GRASS 6.4.0svn (beaver_lake):/usr4/grassbase > r.proj input=elevation10m
location=dem10m_northwest output=DEM method=cubic
Input Projection Parameters: +proj=lcc +lat_1=43 +lat_2=45.5 +lat_0=41.75
+lon_0=-120.5 +x_0=1312336 +y_0=0 +no_defs +a=6378137 +rf=298.257222101
+nadgrids=/usr/local/grass-6.4.0svn/etc/nad/WO
Input Unit Factor: 1
Output Projection Parameters: +proj=lcc +lat_1=43 +lat_2=45.5 +lat_0=41.75
+lon_0=-120.5 +x_0=399999.9999999999 +y_0=0 +no_defs +a=6378137
+rf=298.257222101 +nadgrids=/usr/local/grass-6.4.0svn/etc/nad/WO
Output Unit Factor: 1
ERROR: Input raster map is outside current region
The input location's PROJ_INFO file contains:
name: Lambert Conformal Conic
proj: lcc
datum: nad83
ellps: grs80
lat_1: 43
lat_2: 45.5
lat_0: 41.75
lon_0: -120.5
x_0: 1312336
y_0: 0
no_defs: defined
nadgrids: WO
and the destination location's PROJ_INFO file contains:
name: Lambert Conformal Conic
proj: lcc
datum: nad83
ellps: grs80
lat_1: 43
lat_2: 45.5
lat_0: 41.75
lon_0: -120.5
x_0: 399999.9999999999
y_0: 0
no_defs: defined
nadgrids: WO
Both have meters as PROJ_UNITS.
The original metadata for the 10m DEM shows the following:
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 43.000000
Standard_Parallel: 45.500000
Longitude_of_Central_Meridian: -120.500000
Latitude_of_Projection_Origin: 41.750000
False_Easting: 1312336.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Panar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 32.828670
Ordinate_Resolution: 32.828670
Planar_Distance_Units: User_Defined_Unit
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
What do you folks recommend I do to reconcile the different false easting
for the DEM so it matches that of all the vector maps?
Rich
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