Dear list,
I'm performing a mrpp analysis for my data (spp), the
grouping factor is mhab.
mhab has five levels: b br c nd
nongap t
So, for a mrpp with factor mhab with all levels I'm doing:
mrpp(data=spp, grouping=mhab, dist=bray,
permutations=1000)
BUT now I want is to
Dear R-eco'ers, I am about to analyze a dataset with population trends from
two decades (1990's and 2000's) for about 500 populations.
I would like to incorporate both trends in the same model (as the response
variable) to get an idea of how the populations respond to different
environmental
Cristabel, I don't know if this what you are after. Why don't you just use
the subset of data you are interested in.
mrpp(data=subset(spp, mhab == b mhab == nd), grouping=mhab,
dist=bray,
permutations=1000)
or
spp1 - subset(spp, mhab == b mhab == nd)
spp1$mhab - factor(spp1$mhab) #to drop
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On 10-09-24 07:26 AM, Peter Jørgensen wrote:
Dear R-eco'ers, I am about to analyze a dataset with population
trends from two decades (1990's and 2000's) for about 500
populations.
I would like to incorporate both trends in the same model (as the
