[GRASSLIST:8297] Re: changing projection

[s99171059 at tuks.co.za]

Thanks, Stephan,

But now, when I r.proj the raster, I get the message that it doesn't fit the
region, or something like that.  To fix this, I select the 'Dont crop...'
button.  The projection is done, but when I want to display the raster, I get a
blank window.  I also tried to set the region to the raster map, but this didn't
help.

Any other ideas will be appreciated. 



Quoting Stephan Holl <holl at gdf-hannover.de>:

> Hello Kobus,
> 
> On Thu, 15 Sep 2005 08:50:31 +0200 (SAST) s99171059 at tuks.co.za wrote:
> 
> > I created a new location, and chose tmerc as my projection.  Then I
> > simply imported the ERDAS .img, with the 'Override projection (use
> > location's projection)' flag set.  Will my ERDAS file now be
> > converted to the correct projection, or will the data of the image
> > not correlate with the projection info?
> 
> The latter is the case. Some needed steps in short:
> 
> * import your .img with r.in.gdal in=my.img loc=newlocation
> * create a new location with your target-projection definition
> * enter your newly created target location
> * use r.proj to transform from your UTM-loc into your newly created
> tmerc-location.
> 
> Hope that helps 
> 
> Best regards
> 
> 	Stephan
> 
> -- 
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