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st: display all categories on pie chart for categorical variables (with some zero values)


From   Adam Collins <ACollins@fxb.org>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: display all categories on pie chart for categorical variables (with some zero values)
Date   Wed, 25 Nov 2009 17:38:31 +0100

Hello, 

I have several categorical variables that each possess the same list of categories (value labels).  

To enable easy comparison of the pie charts, I would like every category to exist on every chart (so that each category retains the same colour/settings/legend position etc on each chart).

The problem is that some of the variables contain zero occurrences of certain values (categories) and the standard 'over(varname)' option with -graph pie- excludes categories with no occurrences.  I have tried the 'allcategories' option, but since it applies to the 'over()' variable, it does not help.

Does anyone have any ideas?  (by the way, since this is for a specific set of categorical variables, it is fine if the categories are 'hard coded', then applied to each variable)

Thanks again for your help!

Adam

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