Your "solution" is unnecessarily complicated. There is no need to convert
to data frames and no need to eval labels -- simple indexing by column and
row names will do. I think the following code is pretty self-explanatory:
(Starting with the same mat1 and mat2)
rnames <- setdiff(rownames(mat2),
Hi,
May be this helps:
mat1<- matrix(c(1,1,0,0,0,1,0,1,0),ncol=3,dimnames=list(paste("Plant",1:3),
paste("Pollinator",1:3)),byrow=TRUE)
mat2<-
matrix(c(1,1,0,1,0,1,0,1,0),ncol=3,dimnames=list(paste("Plant",c(1,4,5)),
paste("Pollinator",c(1,2,4))),byrow=TRUE)
dat1<- as.data.frame(mat1)
dat2<-
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