Re: st: tokenize `varlist' error?

[David Kantor <dkantor@jhu.edu>]

At 11:15 AM 4/23/2004 -0400, Adrian Gonzales wrote:

> Dear Statalisters
>
> I want to perform a simple procedure over 100 variables and I don t want 
> to enter the name of each variable one by one.
>
> If I use the first definition of varlist (below), my little procedure 
> works fine.  But if I used the second definition of varlist, using - I get 
> an error (procedure below).
>
> How can I solve this problem?  I am sure this is very simple for most of 
> you, but I am new trying to do these things with Stata.
> [...]
>
>
> local varlist p26_1_1 p26_1_2 p26_1_3
>
> local varlist p26_1_1-p26_1_3
>
> tokenize `varlist'
>
> [...]
The first version of varlist contains actual variable names, so -tokenize- 
works fine. The second is an abbreviated list; it does not literally 
contain all the variables you want, plus it has a hyphen, which is not 
legal in variable names.

What you want is -unab-, rather than -tokenize-.

Better yet, if this is in a program, use -syntax-.

Also, you might want to use -foreach- instead of -while- (does Stata 7 have 
-foreach- ?).

Good Luck.
-- David


David Kantor
Institute for Policy Studies
Johns Hopkins University
dkantor@jhu.edu
410-516-5404

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