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GROUP1D: Stata module for grouping or clustering in one dimension

Author

Listed:
  • Nicholas J. Cox

    (Durham University)

Programming Language

Stata

Abstract

group1d groups or clusters values of a variable ordered in one dimension. Natural examples are the values of a variable sorted from smallest to largest, the values of a time series, or the values of a spatial series along or down a profile, transect, core, borehole, etc. n values are clustered into one or more contiguous groups, the (k - 1) boundaries between k groups being chosen to minimise the sum of the within-cluster sums of squared deviations from cluster means over the comb(n - 1, k - 1) possible clusterings. The clustering produced is guaranteed optimal, but it may not be unique.

Suggested Citation

  • Nicholas J. Cox, 2007. "GROUP1D: Stata module for grouping or clustering in one dimension," Statistical Software Components S456844, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s456844
    Note: This module should be installed from within Stata by typing "ssc install group1d". 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

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/g/group1d.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/g/group1d.hlp
    File Function: help file
    Download Restriction: no
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