> I have a list of column names:
> >names.species.bio.18=c("Achimillb","Agrosmitb","Amorcaneb","Andrgerab","Ascltubeb","Elymcanab","Koelcrisb","Lespcapib","Liataspeb","Lupipereb","Monafistb","Panivirgb","Petapurpb","Poaprateb","Querellib","Quermacrb","Schiscopb","Sorgnutab")
>
> I want to select the column numbers which correspond to these names in my
> data frame:
> >which(colnames(data)==names.species.bio.18)
How about:
num<-1:length(colnames(data))
num[colnames(data) %in% names.species.bio.18]
hth
Stefan
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