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st: AW: Using if in list of r(...)

From   "Martin Weiss" <>
To   <>
Subject   st: AW: Using if in list of r(...)
Date   Tue, 6 Apr 2010 15:29:35 +0200


Note you can -assert- the property, and subsequently condition on the -_rc-:

la def lher 1 "hello" 2 "bye-bye"
la def mylab 1 "hello" 2 "bye-bye"
la def lab 1 "hello" 2 "bye-bye"
la dir
foreach val in `r(names)' {
cap assert substr("`val'",1,1) ~= "l"
di in r "Now at `val', and rc is: " _rc


-----Ursprüngliche Nachricht-----
[] Im Auftrag von Kaulisch, Marc
Gesendet: Dienstag, 6. April 2010 15:05
Betreff: st: Using if in list of r(...)

I have the following problem: I would like to have all names of value
labels starting with the same prefix "l". But some of the value labels
do have already a "l" as a prefix.

I generate the list of value labels ( r(names) )with 
label dir

But I have not found a way to select only those with
if substr("`val'",1,1) ~= "l" 

For all value labels it would look like:
foreach val in `r(names)' {
local i = "`val'" 
labelrename `i' l`i' 

But neither foreach, local nor labelrename allow for an if-option. Any
hints, ideas?



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