Presence/ absence data from matrix to single column
The problem with that, is that I just wrote an example of my database, but I have around 250 species and more than 500 sites. In the approach you show me, it looks like I have to enter every species name and sites individually, right? -- View this message in context: http://r.789695.n4.nabble.com/Presence-absence-data-from-matrix-to-single-column-tp4645271p4645331.html Sent from the R help mailing list archive at Nabble.com.