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NEARSTAT: Stata module to calculate distance-based variables and export distance matrix to text file

Author

Listed:
  • P. Wilner Jeanty

    () (The Kinder Institute for Urban Research/Hobby Center for the Study of Texas, Rice University)

Abstract

Using Mata, Stata's new matrix language, nearstat calculates distances, generates distance-based variables, and exports the distances to a Stata matrix, a Mata file, or a text file. To generate the variables, nearstat performs, for each observation in a Stata dataset, a series of computational tasks including, but not limited to, calculating distance-weighted descriptive statistics over all neighbors, nearest neighbors, and neighbors falling in a specified distance band; calculating distance to nearest neighbors; counting the number of neighbors falling in a specified distance band; and determining whether a specified (e.g., first, second, third,...) nearest neighbor falls within a certain distance band. Distance is calculated as the Great Circle or crow-fly distance depending on whether spherical or Cartesian coordinates are supplied to nearstat.

Suggested Citation

  • P. Wilner Jeanty, 2010. "NEARSTAT: Stata module to calculate distance-based variables and export distance matrix to text file," Statistical Software Components S457110, Boston College Department of Economics, revised 07 Feb 2012.
  • Handle: RePEc:boc:bocode:s457110
    Note: This module should be installed from within Stata by typing "ssc install nearstat". 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/n/nearstat.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/n/nearstat.mata
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/l/lnearstat.mlib
    File Function: Mata object library
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/n/nearstat.sthlp
    File Function: help file
    Download Restriction: no

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