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Re: st: RE: about stacked mean bar chart


From   "Xiaoqu Luo" <xiaoqu@surfy.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: about stacked mean bar chart
Date   Sat, 02 Nov 2002 08:52:20 +0800

It works great. Thansk a lot for your help!

Xiaoqu

----- Original Message -----
From: "Nick Cox" <n.j.cox@durham.ac.uk>
Date: Fri, 1 Nov 2002 09:52:18 -0000
To: <statalist@hsphsun2.harvard.edu>
Subject: st: RE: about stacked mean bar chart


> Xiaoqu Luo
>  
> > I want to creat stacked bar chart where each bar stands for 
> > the mean of a variable. I tried using "graph v1 v2 v3, bar 
> > means by (v4) stack" to produce this but STATA said that it 
> > was invalid. It looks like "stack" cannot be used with 
> > means (i.e. "stack" option can only have the bar to 
> > represent counts). Do you have any idea to do  stacked bar 
> > chart on mean?
> 
> I guess that -graph, bar- was written with 
> the notion that people might want to stack 
> totals, but not means. 
> 
> One work-around would be as follows: 
> 
> 1. Create variables which are means
> and give them the same variable labels as
> the originals:  
> 
> foreach v of var v1 v2 v3 { 
> 	bysort v4 : egen mean`v' = mean(`v') 
> 	_crcslbl mean`v' `v' 
> } 
> 
> 2. Select just one observation from each 
> group: 
> 
> 	egen tag = tag(v4) 
> 
> 3. Draw the graph 
> 
> 	graph meanv1 meanv2 mean3 if tag, bar stack 
> 	
> 
> Nick 
> n.j.cox@durham.ac.uk 
> *
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> 

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