--- Maarten buis <[email protected]> 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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