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RE: st: using foreach and encode together

From   Tim Evans <>
To   "''" <>
Subject   RE: st: using foreach and encode together
Date   Thu, 7 Jun 2012 14:09:30 +0100

Thanks Nick for your help,

I've changed the length of my variable name and all is fine!

Best wishes


-----Original Message-----
From: [] On Behalf Of Nick Cox
Sent: 07 June 2012 10:08
Subject: Re: st: using foreach and encode together

The variable name


is already 32 characters long, so you can't prepend "v2" to get
another variable name. You have to shorten it.

I would -drop- only if the -encode- works. If the -encode- fails then
it's true that the loop would stop, as here, but in general watch out
that you might lose the variable.

if _rc == 0 drop `var'


On Thu, Jun 7, 2012 at 9:57 AM, Tim Evans <> wrote:

> I'm trying to encode a number of string variables and generate new variables which contain the string values as labels. I have a number of these variables and am trying to avoid doing each manually, however, I am encountering some problems with the syntax. A quick google search has not yielded any answers for me. I'm using Stata 11.2.
> Here is my code:
> foreach var of varlist  IntegrT_Stage_Algo Nodes_Positive IntegrTNM_Stage_Algo_No_assumpti InvStatus {
>  encode `var', gen(v2`var')
>  }
> this is my error message:
> option gen() incorrectly specified
> r(198);
> I guess what I would also like once I have generated the new variable, to drop the string version - perhaps I can add -drop `var'- after the -encode- line?

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