EXPGEN: Stata module to duplicate observations sorted in original order with generated variables

Roger Newson

Statistical Software Components from Boston College Department of Economics

Abstract: expgen is an extended version of expand. It replaces each observation in the current dataset with nc copies of the observation, sorted in the original order, where nc is equal to the integer part int(ncexp) of the required expression ncexp. expgen may also add new variables. These are newvarname1 (containing the value of the expression ncexp), newvarname2 (containing the sequential order of the original observation in the old data set), and newvarname3 (containing the sequential order of each copy in the set of copies generated from its original observation). If missing and/or zero is specified, then observations in the old data set with missing and/or non-positive values for int(ncexp) are each replaced by one observation in the new data set.

Language: Stata
Requires: Stata version 10
Keywords: data; manipulation (search for similar items in EconPapers)
Date: 2000-11-22, Revised 2024-03-22
Note: This module may be installed from within Stata by typing "ssc install expgen". 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/e/expgen.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/e/expgen.sthlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/l/lexpgen.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/l/lexpgen.sthlp help file (text/plain)

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