On 2011-03-12 02:01, Dennis Murphy wrote:
Hi:
It would help if you named your variables such that alphanumeric ordering
doesn't disturb your variable ordering. Having been burned by this a few
times, I've learned the basics of sprintf() :) Here's your example
revisited, along with an alternative stacking/unstacking display with
package reshape.
library(reshape)
vnames<- paste('X', sprintf('%02d', c(1, 2, 10)), sep = '')
vnames
[1] "X01" "X02" "X10"
<snip>
You can do this a bit more simply with sprintf:
vnames <- sprintf("%s%02d", "X", c(1, 2, 10))
Peter Ehlers
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