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st: RE: pie charts


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: pie charts
Date   Wed, 15 Mar 2006 14:33:01 -0000

I have three ideas here. 

1. The variable -partenaires- evidently
has 229 categories, and Stata will be struggling 
to cope. 

Quite possibly all you will see is a legend and the
charts themselves will be out of sight. 

2. I can't see how your syntax corresponds to 
identifying the ten main partners. 

3. Although you want a series of pie charts
it is difficult for me to see how they will convey 
the structure of your data at all well. A time series
graph appears more natural here. Stata does supply 
pie charts -- largely so nobody can say "But you 
can't get a pie chart in Stata!" -- but that doesn't 
make them an effective method for showing comparative
structure over time. 

Nick 
n.j.cox@durham.ac.uk 

Christopher.Grigoriou@unil.ch
 
> To represent on a same graph both the total imports evolution 
> of a country and the evolution in the distribution between 
> its ten main partners over ten years, I want to represent a 
> pie charts per year over ten years.
> 
> If I do it year by year (with as many files as there are 
> years), I run this command:
> graph pie imports, over(partenaires)  plabel(_all name, 
> size(*1.5) color(white))   legend(off) etc...
> 
> To have all the years at once to have the same scale(hence 
> ten pies for 10 years) , I run the following :
> 
> graph pie imports, over(partenaires)  plabel(_all name, 
> size(*1.5) color(white))   legend(off) by(year)
> 
> But then I have the following message error that appear :
> 
> (note:  areastyle p16pie not found in scheme, default attributes used)
> (note:  areastyle p17pie not found in scheme, default attributes used)
> (note:  areastyle p18pie not found in scheme, default attributes used)
> and so on to
> (note: areastyle p229pie not found in scheme, default attributes used)
> 
> Would anybody have any idea?

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