[GRASS-user] using r.resamp.stats- When I reach a tie

[Glynn Clements]

António Rocha wrote:

> >> I'm planning on using r.resamp.stats in order to  resample a grid to a 
> >> coarser resolution. Since I'm using this function with classes I will 
> >> use mode method (more frequentclass to fall into a destination cell is 
> >> the chosen). My question is: when I have a tie between two classes, how 
> >> does GRASS decides which class shall be chosen?
> >>     
> >
> > In the event of a tie, the lowest-numbered category is chosen.
> 
> Thanks for your answer. Is there any other alternative, to resample 
> data, that uses another approach to solve tie events?

What mechanism do you want?

If you wanted e.g. the highest-numbered category, you could use
r.mapcalc to create a map with the categories negated, run
r.resamp.stats on that, then negate the result.

Some other possibilities could reasonably be handled with a
combination of pre- and post-processing.

For others, the only practical solution is to modify
lib/stats/c_mode.c.

-- 
Glynn Clements <glynn at gclements.plus.com>