Eva's solution is fine. I too am a great fan of using -strpos()-,
-substr()- and -subinstr()- for basic string manipulation.
I thought nevertheless it would be of interest to look at a regex
solution -- partly because Ronnie may one day soon have a problem that
does not quite fit his original specification.
foreach x of var r* {
if regexm("`x'", "(r[0-9]+)(k[0-9]+)") {
rename `x' `=regexs(2)'`=regexs(1)'
}
}
That flips all varnames of the form r<digits>k<digits> to
k<digits>r<digits>.
Nick
[email protected]
Eva Poen
here is one way to do it.
foreach x of varlist r1* {
local end = substr("`x'",-2,.)
local start = subinstr("`x'","`end'","",1)
rename `x' `end'`start'
}
Ronnie Babigumira
> How do I rename some variables by switching letters around.
>
> As an example, I would like to rename r1k4 r12k4 to k4r1 and k4r12, so
take
> the last two characters and put them at the beginning and put whatever
is
> left at the end.
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