Re-post data format question (apologies)
There are various ways, but for simple convenience that's exactly the job that crosstab() in ecodist was written for. Sarah
On Sat, Feb 7, 2009 at 2:47 PM, Drew Garey <corydalus at gmail.com> wrote:
Hello all,
I have a *.csv file that looks like this (actual file is orders of magnitude
larger):
Site taxa no.ind
forest LMA 1
forest LCY 1
forest SCO 1
meadow LMA 2
meadow LCY 1
meadow PNT 3
I am interested in, but have failed to create, code that efficiently
converts it to a site-by-taxa matrix or data frame that looks like this:
LMA LCY SCO PNT
Forest 1 1 1 0
Meadow 2 1 0 3
With no repeating taxa names and zeros where a taxon is not listed for a
site. Any help would be greatly appreciated.
Regards,
Drew Garey
Aquatic Ecoloy Lab Manager
Virginia Commonwealth University
[[alternative HTML version deleted]]
Sarah Goslee http://www.functionaldiversity.org