[GRASS5] r.neighbors

Markus Neteler neteler at geog.uni-hannover.de
Fri Mar 9 03:57:57 EST 2001


On Thu, Mar 08, 2001 at 03:55:38PM -0400, Bob Covill wrote:
> Markus Neteler wrote:
> 
> > Hi Bob,
> >
> > On Thu, Mar 08, 2001 at 03:27:09PM -0400, Bob Covill wrote:
> > > Hello,
> > >
> > > I have applied a couple changes to r.neighbors. I have updated the
> > > median option which was not working. It seems to be working now, but
> > > could use some testing.
> > thanks for the fix!
> >
> > > I have also added a flag "-n" to reset zeros in the output raster to
> > > null. The default currently outputs all nan data to zero.
> > Would it make sense to have NULL as default output and Zero optional?
> > Most GRASS modules write NULL.
> >
> > Regards
> >
> >  Markus
> >
> > ----------------------------------------
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> 
> Markus,
> 
> I will flip the flag around and make it write NULL by default. The only
> potential problem is if the the raster contains real zeroes in which case -n
> would have to be set to avoid setting thwem to null.
Bob,

what about
-z: preserving zero values in calculation

Would this cover all side effects?
 
> If this is acceptable I will update the html man page as well.
> 
> --
> Bob Covill
> 


Regards

 Markus

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