[R] Sub-vector

King, David David.King at schroders.com
Wed Mar 29 19:26:01 CEST 2006


which(a) will identify the TRUE values and sum(a) will tell you how many
TRUE values there are.


-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Wuming Gong
Sent: 29 March 2006 18:21
To: r-help at stat.math.ethz.ch
Subject: [R] Sub-vector

* Please Note : This message was received from the Internet *

Dear list,

Given a vector of logical values, say


Are there any R functions that can tell whether there are two or more
"TRUE" in a row in this vector?



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