Assume that you didn't know about -renvars- from Stata Journal, as just publicised by Martin Weiss. You could still slim this down and speed this up:
1. There is no need to push the wildcard varlist *_56epi through -ds- and then push its result r(varlist) into a local. This is repackaging the same information in three forms; one is enough.
2. There is no need for the family of middle macros y_`x' inside the loop.
Thus this example can be slimmed to:
clear
set obs 1000
g abc_56epi=0
g def_56epi=0
g ghi_56epi=0
foreach x of var *_56epi {
rename `x' `= regexr("`x'", "_56epi", "_45epi")'
}
Nick
[email protected]
Tirthankar Chakravarty
Here is another, clunkier, option:
/* Begin */
clear
set obs 1000
g abc_56epi=0
g def_56epi=0
g ghi_56epi=0
ds *_56epi
local varlist=r(varlist)
foreach x of local varlist {
local y_`x' = regexr("`x'", "_56epi", "_45epi")
rename `x' `y_`x''
}
/* End */
T
On Fri, May 1, 2009 at 11:57 AM, sdm1 <[email protected]> wrote:
> I have 150 variables all with the same suffix. I'd like to be able to
> change this suffix to a different suffix (eg from '_56epi' to '_45epi'. Is
> there an easier way to do this than using the 'rename' command 150 times?
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