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st: -stripplot- updated on SSC


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: -stripplot- updated on SSC
Date   Thu, 23 Apr 2009 12:18:12 +0100

Thanks to Kit Baum, the package -stripplot- has been updated on SSC.
Stata 8.2 is required. To install or update, use -ssc- or -adoupdate- as
appropriate. 

The first version of -stripplot- was called -onewplot- and goes back to
23 April 1999. The truncated name reflected the 8.3 filename.ext limit
that then applied to Stata ado files. Later the longer name -onewayplot-
was used; the present name was adopted in 2005. 

Originally the program was designed as an alternative to the official
command -graph, oneway- (from Stata 8 -gr7, oneway-). Later its role
became more of an alternative to the official command -dotplot-. More
recently, the popularity of similar ideas in other software (e.g. R) has
also been a stimulus. 

The update consists most visibly of a new option -separate()- for
distinguishing subsets of data points. A question from Kit Baum at the
London users' meeting last September nudged me into implementing this.
Thus users now have three possibilities for subdivision of data:
previous versions of -stripplot- included -by()- and -over() options. 

There are also various other small updates and fixes to both code and
help. 

The help file is detailed, with several examples and references, so I
won't expand further. Those wanting a quick sample of -stripplot- could
try, after installation,  

. sysuse auto, clear  
. stripplot mpg, over(rep78) separate(foreign) stack 

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



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