[R-sig-Geo] Soil as predictor in SDM

Ben Tupper btupper at bigelow.org
Wed Sep 27 17:10:16 CEST 2017


This is addressed briefly in section 4.2 of the dismo package vignette.

https://cran.r-project.org/web/packages/dismo/vignettes/sdm.pdf <https://cran.r-project.org/web/packages/dismo/vignettes/sdm.pdf>

Does that answer your question?


> On Sep 27, 2017, at 10:59 AM, Maurizio Marchi <mauriziomarchi85 at gmail.com> wrote:
> Dear R users,
> I would like to include soil as predictor in my model and in addition to
> climatic variables. Anyway I have some doubts concerning the usd of
> categorical values such as the format of my raster file. Actually, my soil
> type data are categorical codes, should these codes be described as
> categories prior to be used? Or shoul I reclassify my raster into numeric
> values? My main concern is if I would create directional influence and bias
> in the results.
> Thanks
> -- 
> Maurizio Marchi
> Skype ID: maurizioxyz
> linux user 552742
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Ben Tupper
Bigelow Laboratory for Ocean Sciences
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East Boothbay, Maine 04544

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