[GRASS-user] Importing rectified images

[Māris Nartišs]

Hi,

from my experience:
ArcMap 8.x series has some bug - I was unable to change wrong central meridian 
for with ArcMap georeferenced files (tiffs). Best solution was to remove 
coordinate system from tiffs with ArcCatalog. Resulting file had correct 
extent, but lacked coordinate system info. You can identify such case with 
gdalinfo tool (see below example).
If You have such file, You can import into GRASS with "r.in.gdal -o" and image 
will be in correct position IF locations coordinate system is same as for 
tifs.

Hope this helps a little.

Maris.

________________________________________________________________
$ gdalinfo 4324-25.tif
Driver: GTiff/GeoTIFF
Size is 5000, 5000
Coordinate System is `'
Origin = (595000.000000,6335000.000000)
Pixel Size = (1.00000000,-1.00000000)
Corner Coordinates:
Upper Left  (  595000.000, 6335000.000)
Lower Left  (  595000.000, 6330000.000)
Upper Right (  600000.000, 6335000.000)
Lower Right (  600000.000, 6330000.000)
Center      (  597500.000, 6332500.000)
Band 1 Block=5000x1 Type=Byte, ColorInterp=Gray


On Monday 03 July 2006 19:10, Prof Darrel Maddy wrote:
They
> were rectified in ArcMap. This produces associated aux, rrd and tfw
> files.
>
> Using gdal I was able to import the tifs without any coordinate system