[R] How to match some patterns in a matrix
gunter.berton at gene.com
Fri Apr 11 20:49:30 CEST 2008
1. Strictly speaking, y is a one-column matrix if it has a non-null dim
attribute (it also is a vector).
2. ?match or ?"%in%" tells you what to do.
x2[x2[["name"]] %in% y,]
is what you want.
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of ss
Sent: Friday, April 11, 2008 11:23 AM
To: r-help at r-project.org
Subject: [R] How to match some patterns in a matrix
I have a data frame called x2, which looks like:
 2237 2
1 STye hggd3
2 STy2 bffbd2
3 qw22e bdbdbbbd7
4 deffrdff nnshfd3
and a vector called y, which looks like:
 135 1
 ABCDE BDH5 DESRP1
y is a subset of x2$name and I want to select the rows in x2 whose 'name'
y. Is there an easy way to do so?
I tried subset(x2, y) but it did not work.
Thanks much for your advice.
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