Dear List,
today I turn to you with a next problem. I'm trying to compare species
richness between various datasets (locations) using species accumulation
curves (Chapter 4, page 54 in Tree diversity
analysis<http://www.worldagroforestry.org/treesandmarkets/tree_diversity_analysis.asp>by
Kindt & Coe). To accomplish this I'm using package
BiodiversityR. My data is comprised of species community (PoCom) (10
locations with 83 species) and environmental factors (PoEnv) (10 locations
with 17 factors).
In attempt to calculate the function (accumcomp) I receive the following
error. I can not imagine how a 10x83+10x17 matrix can grow to a GB or more.
Unless I'm missing something? How can I combat this?
> poacc2 <- accumcomp(PoCom, y=PoEnv, factor1="HM_sprem", method="exact")
Error: cannot allocate vector of size 1.2 Gb
In addition: Warning messages:
1: In vector("integer", length) :
Reached total allocation of 1023Mb: see help(memory.size)
2: In vector("integer", length) :
Reached total allocation of 1023Mb: see help(memory.size)
3: In vector("integer", length) :
Reached total allocation of 1023Mb: see help(memory.size)
4: In vector("integer", length) :
Reached total allocation of 1023Mb: see help(memory.size)
Cheers,
Roman
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