Message-ID: <cnvlod$q4c$1@sea.gmane.org>
Date: 2004-11-23T15:40:59Z
From: Henrik Andersson
Subject: Create a vector of combinations based on a table column names
I want to create a character vector based on the table (shortened for
display) below:
Where there are ones in the matrix I want the column name to appear and
where there are zeros nothing, which would make the vector in this
shortened case:
combinations <- ("A B","A C","A E H","A F G","B C D","E G H",A C D E
H","A C D F G")
no value A B C D E F G H
1 2 3.095 1 1 0 0 0 0 0 0
2 2 1.687 1 0 1 0 0 0 0 0
46 3 3.470 1 0 0 0 1 0 0 1
47 3 1.563 1 0 0 0 0 1 1 0
50 3 6.234 0 1 1 1 0 0 0 0
148 4 3.663 0 0 1 0 1 0 1 1
151 4 3.470 0 0 0 1 1 1 0 1
177 5 5.411 1 0 1 1 1 0 0 1
178 5 6.829 1 0 1 1 0 1 1 0
Question is how to make this not so manually?
---------------------------------------------
Henrik Andersson
Netherlands Institute of Ecology -
Centre for Estuarine and Marine Ecology
P.O. Box 140
4400 AC Yerseke
Phone: +31 113 577473
h.andersson at nioo.knaw.nl
http://www.nioo.knaw.nl/ppages/handersson