[GRASSLIST:7139] Re: Add comments to raster

Otto Dassau dassau at gdf-hannover.de
Mon Jun 13 05:59:00 EDT 2005

Am Montag, 13. Juni 2005 11:29 schrieb Martin Wegmann:
> hello,
> I think that I once saw a raster (from the sample data set?) with comments.
> I searched for "comments/description adding" in the GRASS search but was
> not lucky so far.
> I would appreciate any hints how I can add comments/metainfo to a raster.

Hi Martin,

you can use r.support, which is implemented in CVS again since a couple of 

### r.support test.rgb
Edit header for [test.rgb]? (y/n) [n]
Update the statistics (histogram, range) for [test.rgb]? (y/n) [n]
Edit the category file for [test.rgb]? (y/n) [n]
Create/Update the color table for [test.rgb]? (y/n) [n]
Edit the history file for [test.rgb]? (y/n) [n]

The null file for [test.rgb] may indicate that some cells contain
no data. If the null file for [test.rgb] doesn't exist, zero cells in
it are treated by GRASS application programs as no data.

Do you want to create/reset the null file for [test.rgb] so that null cell 
values are considered valid data? (y/n) [n]

Do you want to delete the null file for [test.rgb]
(all zero cells will then be considered no data)? (y/n) [n]


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