Dear R-user
I have a series of spatial analyses to run with R, but I have no idea of
which packages to use. Actually, these are not spatial analyses sensu
stricto, but the principle should be the same.
I would like to analyse animal colour patterns from pictures. I have
pictures of many species, and I would like to test wether colour A is more
associated (ie spatially close to)  with colour B than expected by chance.
I thus need to :
- open my pictures in R (currently in jpeg)
- delineate body contours, colour patches A and colour patches B
- extract coordinates for the three shapes
- perform some spatial statistics
Also, I would like to test wether colour A is located more on the dorsal
than on the ventral side. I thus need to define a line (mid-body) and
calculate the area of colour A above and below this line.

Please, could anyone indicate me which package(s) to use for these tasks? I
read the CRAN task view page for spatial data, but there are so many
packages !!
In advance, thank you very much.
Best regards, Julien


*Julien Renoult*
*Chargé de Recherche CNRS*
*Ph.D Evolutionary Biology - Dr. Vet. Med.*

*UMR8218*
*Art Création Théorie & Esthétique*
*49 rue des Bergers*
*75015 Paris*
*+33615265240*

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