R matrix and cooccurrence analysis

R matrix and cooccurrence analysis

I'm really newbie in R and I'd like to use it to carry out a co-occurrence
analysis of microbial taxa. I have a table like this (tab-separated) with
the relative abundance of taxa: Taxon Sample1 Sample2
Sample3.......Sample54 OTU1 0.2 0.005 0.009 0.12 OTU2 0.62..... OTU3 ....
OTU136
I'd like to obtain a Spearman's rank correlation matrix of the taxa and
then plot it in some nice graph. I'm supposed to have to convert my table
in matrix, before running the corr.test command, right?? So, I tryed to
convert it and it didn't give me any error, but when I tryed to tun the
corr.test, it says that the matrix is not numeric....
Can anyone help me to figure out how to do??
Thanks Francesca