Giulia,


You may look at Pearson, Student or Kolmogorov Smirnov test
cor.test, t.test, and ks.test
after having coerced your matrixes into vectors

Maybe someone has another idea or thinks my advice is not right?

hth

Mathieu

2011/9/1 Conchedda, Giulia (AGAL) <Giulia.Conchedda@fao.org>

> Hi to All,
>
> My question concerns the best practice to compare cell-by-cell two grids
> that are representing the same phenomenon (distribution of rural poor). The
> grids have the same spatial extent and cell size and I would like to
> quantify and provide statistics on how pixel values in the two grids differ.
> I first subtracted one from the other and in this way I can already say and
> spot where differences are more frequent. What is the best statistics to
> quantify this difference?
>
> Thanks for advising,
>
> Giulia
>
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>

	[[alternative HTML version deleted]]

