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Re: st: xtline charts for large panel set


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: xtline charts for large panel set
Date   Wed, 3 Aug 2011 22:05:59 +0200

On Wed, Aug 3, 2011 at 9:42 PM, Tanuku AP wrote:
> I have a data set with roughly 3000 units.   The panel ids are not consecutively numbered.  I'd like to draw --xtline-- charts (w/out overlay) with roughly 20 charts in one frame.
>
> If the panel ids were consecutive I could have used a loop with something like so:
>
> xtline pvar if panelid > `x' & panelid < `x'+ 20    (PSEUDOCODE)
> where x is the loop variable
>
>
> TWO QUESTIONS:
> (1) How can I draw --xtline-- charts for the 3000 units with 20 units at a time
> (2) Is there a way to generate another variable that assigns consecutive numbers to panel ids

(2) use the -group()- egen-function, see -help egen-.
(1) replace -& panelid < `x'+ 20- with -& panelid < `=`x'+ 20'-, see:
<http://www.maartenbuis.nl/example_faq/index.html#`='>

Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------

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