Re: [R] Convert a presence/ absence matrix to a list of presence only

Thank you, it perfectly worked, except I had to modify some codes on the rep("", maxLen - length(sp)) because it gave me some error, thanks -- View this message in context: http://r.789695.n4.nabble.com/Convert-a-presence-absence-matrix-to-a-list-of-presence-only-tp3468479p3498116.html Sent fro

Re: [R] Convert a presence/ absence matrix to a list of presence only

try this; added an extra row so that the lengths would not be even: > x <- read.table(textConnection(" spl_A spl_B spl_C + spcs1 1 1 0 + spcs2 1 0 1 + spcs3 0 1 1 + spcs4 0 0 1"), header = TRUE) > closeAllConnections() > x spl

[R] Convert a presence/ absence matrix to a list of presence only

this thread (http://r.789695.n4.nabble.com/how-to-combine-presence-only-data-sets-to-one-presence-absence-table-td830140.html ) covered the need for making present list list to a matrix, Now, I ran into an opposite problem. I have a data matrix with 0, 1 on them, what I need now is list of presen