[GRASSLIST:10138] Problems with r.proj - grass 6.01

Helmut Kudrnovsky hellik at web.de
Fri Feb 3 03:13:31 EST 2006


Dear grass-friends

I have created two locations with different projections:

Location (1) Projection 
PROJCS["MGI_M31",GEOGCS["GCS_MGI",DATUM["D_MGI",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",450000.0],PARAMETER["False_Northing",-5000000.0],PARAMETER["Central_Meridian",13.33333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

Location (2) Projection 
PROJCS["Germany_Zone_4",GEOGCS["GCS_Deutsches_Hauptdreiecksnetz",DATUM["D_Deutsches_Hauptdreiecksnetz",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",4500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",12.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

In location (1) i´ve imported with r.in.gdal a orthofoto and created with r.composite a colour-orthofoto. For both i set the resolution to 1. Both steps were o.k.

Then i started location (2) and wanted to re-project the orthofoto from location (1) with r.proj into the current location. I set the resolution to 1 in the location and in the input of r.proj and the option „Do not perform region cropping optimization“. 

in the output of r.proj there was written resolution in N-S 1,01... and in W-E 0,99.....
then the re-projection started and finished. A raster-map was created in location (2), but if i zoom to this raster, i can´t see nothing there.

With thanks in advance and greetings from austria
helli

grass 6.01

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