[GRASS-dev] r.cats -> r.category + enhancements

Dylan Beaudette dylan.beaudette at gmail.com
Mon Oct 8 13:43:01 EDT 2007

On Sunday 07 October 2007, Hamish wrote:
> Hi,
> if there are no objections I will rename r.cats to be r.category (to match
> v.category), leaving a r.cats symlink for backwards compatibility for the
> duration of GRASS 6.x.
> In addition I mean to move/copy the copy cats from raster= option from
> r.support to r.category and add a rules= option to import category labels
> from a file.
> (r.support raster= is not in 6.2.x so no crime to move it, although if
> someone cares we can copy it with a note that it will be removed for GRASS
> 7; or maybe r.suppport is a better place for these things, not r.cats? but
> r.support is already crowded)
> I am unsure if it is better for the import format to match the current
> r.cats output format, or to try and follow what r.reclass has. For FP maps
> we will have to accept "a thru b<FS>Label" as well as "a<FS>Label" input
> rules. (<FS> comes from the fs= option)
> Note the category labels can be matched to FP ranges, see the nice writeup
> in the GRASS 5.0 programmers' manual section 5.4. (I expect in the 6 prog
> manual too but I don't have that on hand right now)
> ideas welcome,
> Hamish

This sounds like a great addition. Assigning labels to FP ranges, or even a 
simple approach to assigning labels to integer maps would be useful.



Dylan Beaudette
Soil Resource Laboratory
University of California at Davis

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