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Re: st: Twoway area graphs


From   Knag Anne-Christine <anne-christine.knag@imr.no>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Twoway area graphs
Date   Tue, 03 Jul 2007 12:47:27 +0200

Thanks, exemples are always helpful! But.. This happens:

. tab experiment treatment

           |                       treatment
experiment |         C          E          H          L          M |
Total
-----------+-------------------------------------------------------+--------
--
         1 |        53         58          0         48         59 |
218 
         2 |        58         54         65         61         60 |
298 
-----------+-------------------------------------------------------+--------
--
     Total |       111        112         65        109        119 |
516 


. tostring experiment treatment, gen (expstr treatstr)
expstr generated as str1
treatment already string; no generate

. gen combi = expstr + treatstr
treatstr not found
r(111);

. twoway (area all dos, sort) (area dead dos, sort), by(combi, cols(2)
holes(2 4) )
variable combi not found
r(111);




On 7/3/07 12:08 PM, "Maarten buis" <maartenbuis@yahoo.co.uk> wrote:

> --- Maarten buis <maartenbuis@yahoo.co.uk> wrote:
>> Yes, I would start with making a single variable which contains the
>> allowed combinations (use -tostring- to transform experiment into a
>> string variable, and create the newvariable with -gen newvar =
>> experiment + treatment-) then use the holes option to create the
>> hole.
> 
> An example is probably helpful:
> 
> *------------- begin example --------------
> sysuse auto, clear
> tab rep78 foreign
> tostring rep78 foreign , gen(repstr forstr)
> gen combi = repstr + forstr if rep78 < .
> twoway scatter mpg wei, by(combi, cols(2) holes(2 4))
> *------------- end example ----------------
> (For more on how to use examples I sent to the Statalist, see
> http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
> 
> 
> Hope this helps,
> Maarten
> 
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
> 
> visiting address:
> Buitenveldertselaan 3 (Metropolitan), room Z434
> 
> +31 20 5986715
> 
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
> 
> 
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