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Re: st: looping over several macros

From   Maarten buis <>
Subject   Re: st: looping over several macros
Date   Tue, 15 Feb 2011 16:28:47 +0000 (GMT)

--- On Tue, 15/2/11, John Holmes wrote:
> I want to perform a transformation on the variable
> 'drating' based on the values of three local macros
> On the first loop, I want to use the first values
> in all of the macros `change', `1994' and 
>`1994_shift', on the second loop I want to use
> the second values in all of the macros and so on.

Is this what you are looking for:

*------------ begin example ----------------
local foo "a b"
local bar "1 2"

forvalues i = 1/2 {
	local part_foo : word `i' of `foo'
	local part_bar : word `i' of `bar'
	di "`part_foo' `part_bar'"
*-------------- end example -----------------
(For more on examples I sent to the Statalist see: )

As a general programming strategy such paralel
lists are not very robust. It is very easy for a 
user to make a mistake when specifying such list.
If you are just doing this for a one off .do file
then this is less of a concern (but double check
the content of your macros...).

Hope this helps,

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen


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