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st: Tag clouds in Stata?


From   Gawrich Stefan <s.gawrich@hlpug.hessen.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: Tag clouds in Stata?
Date   Fri, 29 May 2009 09:40:27 +0200

Hi Statalisters,

many websites use tag clouds
(http://en.wikipedia.org/wiki/Tag_cloud#Data_clouds) for different purposes
nowadays. I think tag clouds could also be a useful tool for basic
exploratory analysis in Stata. 

Example 1 : Tag cloud of variable names (in alphabetical order or in order
of the dataset): Fontsize represents e.g. the proportion of missing values. 
Example 2 : Tag clouds of values/value labels of a categorical var (with
many strata like postcodes in a region). Fontsize represents an aggregated
score in each stratum.  

They can help to spot errors or extreme data distributions in variables or
subgroups or help to detect patterns.
There are a lot of methodological issues and statistical options for
visualisation of data in tag clouds.

But the basic question is: Can it be done in Stata?
Is there any routine to produce text in that way (like graph 3 or 4 in the
Wikipedia article)?

Best wishes

Stefan











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