Dear all, I have dichotomous data (occurrence 1 and non-occurence 0) and I want to use the logistic regression method in order to obtain susceptibility map of landslide occurrence.
I try to use r.regression.multi, but I am not sure to correctly define the mapy variable.. I try to use r.mapcalc *r.mapcalc expression="logit_occurrence=log(occurrence_map+0.00001)-log(1-occurrence_map+0.00001)"* obtaining a map that go from -11.5 (not occurrence) to +11.5 (occurrence) when I try to use r.regression.multi I obtain a lot of null values in residuals and estimates map. i do not understand why.. Thanks in advanced for the attention Roberto
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