[GRASS-user] r.resamp.rst smoothing parameter

[Frank Broniewski]

Hi List,

I have some kind of probability map with a resolution of about 90m. Now I want 
to resample this map for press information print. The map has some kind of 
distortions where you have small areas (just a few cells) where the values 
change quickly and the map looks very "turbulent".

I want to use r.resamp.rst for this purpose, and I experimented already with 
the tension parameter. But this alone does not give me satisfactory results. 
From the manual I take it that there is also a smoothing parameter where one 
can give a smoothing raster as parameter. But I really have no clue how this 
raster should look like.

Taking the vector version of r.resamp.rst one can give a number as smoothing 
value which is pretty easy to understand ;-), but what kind of values are 
expected for the smoothing raster? Can I just give a constant raster map as 
smoothing parameter with a value of e.g. 0.1? Then why use a raster map as 
parameter?

I hope someone can light up a candle for me!

Greetings Frank