Message-ID: <s3205864.090@lp-msg1.co.ihc.com>
Date: 2005-09-08T21:27:26Z
From: Greg Snow
Subject: generating a vector from clusters of logicals
Try:
x <- c(TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,TRUE,TRUE)
tmp <- rle(x)
tmp$values <- seq(along=tmp$lengths)
new.x <- inverse.rle(tmp)
new.x
Greg Snow, Ph.D.
Statistical Data Center, LDS Hospital
Intermountain Health Care
greg.snow at ihc.com
(801) 408-8111
>>> Troels Ring <tring at gvdnet.dk> 09/08/05 03:03PM >>>
dear friends,
I have a vector of clusters of TRUE and FALSE like
c(TRUE,TRUE,TRUE...,FALSE,FALSE,FALSE,....TRUE,TRUE...) and want to
make
that into a vector
of c(1,1,1,1...2,2,2,2,.....3,3,3,3) increasing the number assigned to
each
cluster as they change.
How would I do that ?
Best wishes
Troels Ring, Aalborg, Denmark
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