Collinearity test

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Hi Maurizio,

I used the rcorr function from the Hmisc package to calculate the Pearson correlation.

Best,


Andr?


Ir. A.S.J. van Proosdij
PhD Student
e? andre.vanproosdij at wur.nl
Naturalis Biodiversity Center, section NHN
Biosystematics Group, Wageningen?University
Gen. Foulkesweg 37, 6703 BL Wageningen,?the Netherlands
www.bis.wur.nl

-----Original Message-----
From: r-sig-geo-bounces at r-project.org [mailto:r-sig-geo-bounces at r-project.org] On Behalf Of Maurizio Marchi
Sent: woensdag 13 november 2013 11:00
To: r-sig-geo at r-project.org
Subject: [R-sig-Geo] Collinearity test

Hallo everybody,
I'm working with Species Distibution Models to predict the potential distribution of a forest specie.
I use WorldClim raster data for Italy and before running SDMs algorithm I would like to test the collineariy between factors to eliminate redundancy of data.
My question in: is there a package that can be used to Test collinearity between factors of a raster stack (worldclim biovariables)?

Thanks,

--
Maurizio Marchi, Ph.D student
Forestry Research Centre (Arezzo, IT)
ID skype: maurizioxyz
*Ubuntu 12.04 (Precise Pangolin)*


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Also see:

library(dismo)
s <- stack(system.file("external/rlogo.grd", package="raster"))
pairs(s)

Robert

On Wed, Nov 13, 2013 at 3:06 AM, Proosdij, Andre van

Hi Maurizio,

I used the rcorr function from the Hmisc package to calculate the Pearson correlation.

Best,


Andr?


Ir. A.S.J. van Proosdij
PhD Student
e  andre.vanproosdij at wur.nl
Naturalis Biodiversity Center, section NHN
Biosystematics Group, Wageningen University
Gen. Foulkesweg 37, 6703 BL Wageningen, the Netherlands
www.bis.wur.nl

-----Original Message-----
From: r-sig-geo-bounces at r-project.org [mailto:r-sig-geo-bounces at r-project.org] On Behalf Of Maurizio Marchi
Sent: woensdag 13 november 2013 11:00
To: r-sig-geo at r-project.org
Subject: [R-sig-Geo] Collinearity test

Hallo everybody,
I'm working with Species Distibution Models to predict the potential distribution of a forest specie.
I use WorldClim raster data for Italy and before running SDMs algorithm I would like to test the collineariy between factors to eliminate redundancy of data.
My question in: is there a package that can be used to Test collinearity between factors of a raster stack (worldclim biovariables)?

Thanks,

--
Maurizio Marchi, Ph.D student
Forestry Research Centre (Arezzo, IT)
ID skype: maurizioxyz
*Ubuntu 12.04 (Precise Pangolin)*

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