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st: new bivariate density estimation and graphics routine


From   Christopher Baum <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: new bivariate density estimation and graphics routine
Date   Thu, 27 Dec 2012 19:10:56 +0000

. ssc desc bidensity

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package bidensity from http://fmwww.bc.edu/repec/bocode/b
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TITLE
      'BIDENSITY': module to produce and graph bivariate density estimates

DESCRIPTION/AUTHOR(S)
      
       bidensity produces bivariate kernel density estimates and graphs
      the result using  a twoway contourline plot, optionally
      overlaying a scatterplot.  The default kernel is Epanechnikov;
      all of the kernels provided by -kdensity- are also available.
      Compared to Baum's -kdens2- (SSC), which was recently enhanced to
      produce contourline plots,   -bidensity- computes the bivariate
      kernel densities much more efficiently through use of Mata, and
      provides a choice of kernel estimators. The estimated densities
      can be saved in a Stata   dataset or accessed as Mata matrices.
      
      KW: density estimation
      KW: bivariate density
      KW: contourline plots
      
      Requires: Stata version 12.1
      
      Distribution-Date: 20121227
      
      Author: John Luke Gallup, Portland State University
      Support: email [email protected]
      
      Author: Christopher F Baum, Boston College
      Support: email [email protected]
      


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