Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: Replacing observations with values from other observations
From
Ryan Stevens <[email protected]>
To
[email protected]
Subject
Re: st: Replacing observations with values from other observations
Date
Fri, 31 May 2013 16:42:10 -0400
Moses,
To reference observations in Stata you use [#] after your variable, so
observation number 6 for var1 can be accessed as var1[6]. Now you have
to remember your obsID variable and the observation number according
to Stata may be different. So your code could look like:
replace var1 = var1[6] if obsID==5
This replaces the var1 with the value of var1 at Stata observation 6
if obsID==5. Now this could all be simplified if obsID matches Stata's
observation numbers. If there is a one-to-one mapping of obsID to
Stata's observation numbering you can do this as
replace var1 = var1[6] in 5
This replaces the value of observation 6 at observation 5.
Ryan
On Fri, May 31, 2013 at 4:31 PM, Pounds, Moses A.
<[email protected]> wrote:
> Hello everyone,
>
> I would like to replace specific observations with values from other observations. I can use
>
> replace var1 = 500 if obsID==5
>
> to replace the value for variable 1 in the observation with ID number 5, with the quantity 500. What I would like is code that allows me to make a reference to another observation, in place of that "500." Does anyone have a way to do this? (My option of last resort is to do this in Excel, but I would prefer to keep working in Stata.)
>
> Thanks in advance for any help you can give,
> Moses
>
> ----------------------------------------
> Moses A. Pounds
> Program Evaluator
> Baltimore City Public Schools
> Office of Achievement and Accountability
>
> NOTICE: The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained herein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/