[GRASS-user] using r.mode- Can different resolutions be a problem?

GRASS GRASS user
1

Greetings

A couple of days ago I sent a few ermails about r.mode. Now I have one questions: is there any issue associated with the fact that, ocasionally, base and cover map may have different resolution? Is this a problem?

Thanks
Monica

2

On Sat, Oct 30, 2010 at 12:53 AM, Monica Buescu
<monicabuescu1985@gmail.com> wrote:

Greetings

A couple of days ago I sent a few ermails about r.mode. Now I have one
questions: is there any issue associated with the fact that, ocasionally,
base and cover map may have different resolution? Is this a problem?

It will work of course but not necessarily be statistically significant (think
for example at a high resolution base map and a just one-pixel cover map...).
So some careful reasoning is recommended.

Markus

3

Thanks Markus.
By the way, just one last question:
If I have pixel values that I don’t want to apply r.mode (for instance 0), can I transform them to null (using r.mapcalc) and then apply r.mode? Isn’t there any issue regarding null values?
Thanks

On Sat, Oct 30, 2010 at 5:34 PM, Markus Neteler <neteler@osgeo.org> wrote:

It will work of course but not necessarily be statistically significant (think

for example at a high resolution base map and a just one-pixel cover map…).
So some careful reasoning is recommended.

Markus