NNIPOLATE: Stata module for nearest neighbour interpolation

Nicholas Cox

Statistical Software Components from Boston College Department of Economics

Abstract: nnipolate creates newvar by averaging non-missing values of yvar and using nearest neighbour interpolation of missing values of yvar, given xvar. That is, provided that xvar is not missing, missing values of yvar are filled in with the value of the previous known value of yvar or the value of the next known value of yvar, depending on which is nearer in terms of xvar. When previous and next values are equally distant from a known value, users have a choice of rules that they may wish applied. By default, nnipolate uses the mean of the two values.

Language: Stata
Requires: Stata version 8.2
Keywords: interpolation; missing values; nearest neighbour; nearest neighbor (search for similar items in EconPapers)
Date: 2012-11-08
Note: This module should be installed from within Stata by typing "ssc install nnipolate". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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http://fmwww.bc.edu/repec/bocode/n/nnipolate.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/n/nnipolate.sthlp help file (text/plain)

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