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st: RE: Questions about -rspread-


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Questions about -rspread-
Date   Wed, 18 May 2005 18:58:16 +0100

-rspread- was written by long-time Stata user
Richard Goldstein, contributor to this list and 
lead organiser of the upcoming Boston users' 
meeting, in 1993 and published in STB-23 in January 
1995. 

A lot of water has flowed down the Charles River
since then and in the interim -rspread- has been 
broken by changes in what is probably your operating 
system, namely Windows. 

Or so I guess. 

That is, -rspread- is saving your data in a temporary 
file but was not smart enough to realise that Microsoft
would later allow filenames to include spaces.

Either way, Richard should probably negotiate with 
the Editors of the Stata Journal about publishing 
a Software Update fixing and modernising this program. 

In the mean time, you want multiple Lorenz curves
on the same graph. -rspread- cannot do this. 
You should check out the -glcurve- program from
Philippe van Kerm and Stephen Jenkins, save the 
graph coordinates and fire up -twoway-. 

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

louis boakye-yiadom

> I have two questions:
> 1. I've been trying to explore how -rspread- works. I gave a 
> command and had 
> an output, but with the error message - invalid 'files' (198) 
> -  below the 
> output. The command was:
> rspread welfare
> The output looked alright, but I don't understand why the 
> error message was 
> also generated. I've checked to be sure there are no zeros or missing 
> observations, using - count if mi(welfare) - and
> - count if welfare==0 -. Each of the last two commands gave 
> an ouput of 0. 
> Can anyone explain what the problem is?
> 2. Can -rspread- be used to generate two or more Lorenz 
> curves within the 
> same axes?
> 
> Thank you.
> 
> Regards,
> Louis
> 
> 
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