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st: RE: Drop variables satisfying a condition

From   "Guillermo Villa" <>
To   <>
Subject   st: RE: Drop variables satisfying a condition
Date   Fri, 6 Jul 2007 16:21:53 +0200


Thanks, but I think the loop does not work with strings, so it stops when it
finds the first string in the dataset. Do you think it is possible to write
a similar loop for any variable format? I have a huge dataset, with about
500 variables, so this will be very helpful.

Thanks again.


-----Mensaje original-----
De: Guillermo Villa []
Enviado el: viernes, 06 de julio de 2007 14:33
Para: ''
Asunto: Drop variables satisfying a condition

> Dear statalisters,
> I wonder whether it is possible to drop several variables in a dataset
> specifying an "if" condition. For instance, it would be interesting
> being able to drop all variables in the dataset for which all cases
> are 0 or missing values. I have been reading the help documentation on
> the "drop" command, however I am unable to find the right answer so
> far. Note that I want to drop variables and not cases.
> Thanks in advance.
> Guillermo

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