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st: RE: replacing some values in column A by the values from column B


From   "Ward Vanlaar" <[email protected]>
To   <[email protected]>
Subject   st: RE: replacing some values in column A by the values from column B
Date   Tue, 5 Feb 2008 13:00:49 -0500

Try this:

replace materials=costmaster if materials==.|materials<0

Ward

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Oliinik,
Victoria
Sent: Tuesday, February 05, 2008 12:48 PM
To: [email protected]
Subject: st: replacing some values in column A by the values from column
B

Dear statalisters, 

Does anyone know whether (and how) I can get Stata to do the following:

I have a variable "materials" which contains a lot of missing and
negative values. Where values are missing, or negative, I want Stata to
take corresponding values from a variable "costmater" and replace them
in the column "materials".

Thanks 
Victoria



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