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Re: st: use of if command after commands with options


From   David Kantor <kantor.d@att.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: use of if command after commands with options
Date   Thu, 31 Jul 2008 13:19:50 -0400

You need to either put the -if- qualifier before the comma:
pca... if x==1, comp(6)
or put it at the end, after a second comma:
pca... , comp(6), if x==1

Commands have a "main" part and an "option" part. The comma switches back and forth between these two parts.

HTH
--David

At 01:03 PM 7/31/2008, Stephan Rudolfer wrote:

I wish to use the if command to select a subset for estimation purposes, but also use options for the main command. This doesn't seem to work, since stata thinks that "if" is a further option. For example, pca..., comp(6). If I follow this with "if x==1", it won't work because stata thinks that "x==1" is a further option for pca.
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