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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Tag clouds in Stata? |

Date |
Fri, 29 May 2009 11:44:49 +0100 |

A tag cloud I take to be, in Stata terms, a scatter plot with differently represented text labels. (I take it no-one is imagining making the graph clickable.) The answer to "can" is evidently, Yes, but a bit awkwardly. I'm more interested in "should", i.e. how far is this a good idea? On that I'd echo Maarten's main comments. In addition, Example 1 doesn't sound like something for which a tag cloud is either a direct or an efficient way of representing information. You could just look at a table as created by e.g. -nmissing- (SJ) or code it up as a bar chart. Similarly, Example 2 sounds a gimmicky alternative to some standard bar chart or an ordered list. Nick n.j.cox@durham.ac.uk Gawrich Stefan 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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Tag clouds in Stata?***From:*Gawrich Stefan <s.gawrich@hlpug.hessen.de>

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