[GRASS5] Re: d.his

[Markus Neteler]

Hi again on d.his,

there is a simple test to see what I mean with "moire patterns":

r.mapcalc map1=44
r.mapcalc map2=100
d.his i=map1 h=map2

I would expect a homogenous color, but there are irregular patterns.

If you use:

d.his i=map1 h=map2 out=his
r.univar his

you will find a range of values although it should be one value overall.
It looks like a precision problem to me.

Markus