[GRASS-user] exporting single banded float raster to true color geotiff (i.e. 3 Byte bands with color interpretation)

G. Allegri giohappy at gmail.com
Mon Sep 19 05:15:52 EDT 2011

Thanks Hamish, r.out.tiff did the work. I already had tried it but I failed
because I dind't set the region correctly.
Anyway, setting the -t flag writes the TFW but doesn't make it a *true*
GTiff, because r.out.tiff writes a Baseline tiff, without the GTiff tags.
But that isn't a problem of course, I can produce a GTiff with another step
(eg gdal tools).


2011/9/17 Hamish <hamish_b at yahoo.com>

> Giovanni wrote:
> > The question is the object :)I have a Float raster which GRASS
> > displays with a certain color table (I haven't set it...
> > PS: what table is used by default?). What's the most effective
> > way to export the raster into a true color Geotiff (as a 3 Byte
> > bands with color interpretation) using a certain color table?
> I believe that r.out.tiff will export using colors, not data.
> Add the -t flag to get a world file & so make it a geotiff.
> In GRASS 6.4 the d.out.file module is another option, set the
> size= parameter to the number of rows and columns, and select
> format=geotiff.
> The default color table is "rainbow", see the r.colors help page
> for details.
> Hamish
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