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GSGROUP: Stata module to create a group variable and optionally an output dataset for a gsort key

Author

Listed:
  • Roger Newson

    (King's College London)

Programming Language

Stata

Abstract

gsgroup inputs a gsort key (a list of elements of the form used by gsort), and generates as output a new variable, indicating the sequential order of the group to which each observation belongs, and (optionally) an output dataset (or resultsset), with 1 observation per group, and data on the values of the generated variable, and the variables of the gsort key corresponding to that group. Unlike gsort, gsgroup does not change the sort order of the dataset in memory. The output dataset can be merged into other datasets, using the official Stata command merge or the SSC package addinby. gsgroup is typically used together with the SSC packages parmest and xcontract.

Suggested Citation

  • Roger Newson, 2012. "GSGROUP: Stata module to create a group variable and optionally an output dataset for a gsort key," Statistical Software Components S457526, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s457526
    Note: This module should be installed from within Stata by typing "ssc install gsgroup". 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.
    as

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    File URL: http://fmwww.bc.edu/repec/bocode/g/gsgroup.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/g/gsgroup.sthlp
    File Function: help file
    Download Restriction: no
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    More about this item

    Keywords

    data management; group; gsort; Stata;
    All these keywords.

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