[GRASS-user] bitpattern analysis

[Hamish]

Laura Poggio wrote:
> I am trying to use the QA information of MODIS products. I
> found that this analysis can be done in GRASS with
> r.bitpattern (from Neteler, 2005 with some examples)
> or with r.mapcalc . 
> 
> From what I understood, the use of r.mapcal seems to be
> more flexible. I am just wondering if there are some code
> examples using the bitwise operators of mapcalc.

this doesn't answer your question directly, but maybe it is of
interest:
  http://grass.osgeo.org/wiki/MODIS

and quality layer application method here
  http://grass.osgeo.org/wiki/AVHRR



Hamish