COLLAPSEUNIQUE: Stata module to reduce data to unique observations based on specified key variables

David Kantor

Statistical Software Components from Boston College Department of Economics

Abstract: collapseunique reduces data to unique values based on a specified set of key variables. This tests for functional dependence; if the test passes, the data set gets collapsed. This is useful for extracting embedded functional dependency information, and for data normalization. The package includes the funcdep program for detecting functional dependence.

Language: Stata
Requires: Stata version 8.0
Keywords: collapse; unique; reduce; reduction; normalization; normal form; functional dependence; functionally dependent (search for similar items in EconPapers)
Date: 2003-06-21, Revised 2008-06-24
Note: This module may be installed from within Stata by typing "ssc install collapseunique". 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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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/c/collapseunique.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/c/collapseunique.hlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/f/funcdep.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/f/funcdep.hlp help file (text/plain)

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