[R-sig-Geo] pixel-wsie correlation between raster stack and numeric vector?

[Thomas Adams]

Michael,

I would combine the use of GRASS GIS and R (making use of spgrass7); first,
using the vector point locations:

(0) import raster and vector data into GRASS GIS
(1) use GRASS v.sample (http://grass.osgeo.org/grass70/manuals/v.sample.html)
to sample the raster data at the vector point locations
(2) launch R within the GRASS GIS session, load spgrass7 library
(3) within R (using spgrass7) read the both vector datasets (the original
vector data and new data from using v.sample) from GRASS
(4) do R statistical analyses

All this can be easily scripted for batch processing.

Tom

On Mon, Feb 23, 2015 at 4:14 PM, Mike Loranty <mloranty at colgate.edu> wrote:

> Hi All,
>
> Is there a way (e.g. existing function) to calculate correlation
> coefficients between a raster stack and a numeric vector? For example,
> between gridded vegetation indices and a vector of atmospheric oscillation
> indices (e.g. ENSO, NAO, etc...).
>
> Thanks,
> Michael Loranty
> Assistant Professor
> Department of Geography
> Colgate University
> 315.228.6057
> mloranty at colgate.edu
> http://mikeloranty.wordpress.com/
>
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