[GRASS-user] importing dem files: projection details?

[Tyler Smith]

On 03/15/2010 09:38 AM, Markus Neteler wrote:
> On Mon, Mar 15, 2010 at 1:35 PM, Tyler Smith<tyler.smith at eku.edu>  wrote:
>    
>> On 03/15/2010 03:42 AM, Markus Neteler wrote:
>>      
> ...
>    
>> Trying the auto route:
>>
>> grass64 -gui
>> select define new location with georeferenced file
>> select the dem file: k42.dem
>> select the TN transformation, as probably better than the default for
>> adjacent Kentucky
>> enter GRASS with the newly created location and the PERMANENT mapset
>>
>> Results in this error:
>>
>> "g.proj or projection error: ERROR: default region is invalid
>>     line 3:<north: 1080:43:46N>"
>>
>> So GRASS has automatically set up the location using degrees, and then get
>> confused when the raster co-ordinates are provided in meters. Which appears
>> to be fairly close to the sort of problem I ran into when setting this up
>> manually. What am I missing?
>>      
> Please post the output of gdalinfo on that file. GRASS uses GDAL to detect
> projections from metadata.
>
> Markus
>    
Thanks for help! Here it is:

gdalinfo k42.dem

Driver: USGSDEM/USGS Optional ASCII DEM (and CDED)

Files: k42.dem

Size is 1222, 1535

Coordinate System is:

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"]]

Origin = (1467.054166666666561,1080.729444444444425)

Pixel Size = (0.008333333333333,-0.008333333333333)

Metadata:

   AREA_OR_POINT=Point

Corner Coordinates:

Upper Left  (    1467.054,    1080.729)

Lower Left  (    1467.054,    1067.938)

Upper Right (    1477.237,    1080.729)

Lower Right (    1477.237,    1067.938)

Center      (    1472.146,    1074.334)

Band 1 Block=1222x1535 Type=Float32, ColorInterp=Undefined

   NoData Value=-32767

   Unit Type: ft

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