[GRASS-user] display image (photo / jpeg) with PNG driver (i.e. add logo to map).

[Tim Holland]

Glynn Clements wrote:
> 
> 
> Tim Holland wrote:
> 
>> I would like to add a logo to a map that I am printing with the PNG
>> driver. 
>> It is a .jpg, although I could switch it to another image type if that
>> was
>> helpful.  Is there any way to do that?
> 
> Import it as 3 raster maps (red, green, and blue channels) with
> r.in.gdal, move the maps to the correct size and location with
> r.region, then display them with d.rgb.
> 
> 


Thank you for the instructions.  I am getting an error message with
r.in.gdal, though:
>WARNING: G_set_window(): Illegal latitude for North

At present, the file I have is not georeferenced at all - it is just a
normal jpeg.  To experiment I tried changing it to a tiff and importing, but
same problem.  Do I need to somehow define the region of the image before
importing?  

Also, I was not sure how to import as separate r,g,b maps.  Is that just a
matter of having band=1, band=2, band=3 in three iterations of r.in.gdal?  I
tried to experiment with that a bit, but was still having the 'illegal north
latitude' problem so didn't get anywhere. 

Thanks again for the help. 

Tim



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