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SPDIR: Stata module to create directed dyad contagion spatial effect variable


  • Eric Neumayer

    () (London School of Economics and Political Science)

  • Thomas Plümper

    () (University of Essex)


spdir generates a directed dyad contagion spatial effect variable for analysis of spatial dependence in directed dyad data. It can create spatial effect variables for spatial lag, spatial-x and spatial error models. See for an explanation of what constitutes directed dyad contagion. Requires installation of the mmerge package (q.v.)

Suggested Citation

  • Eric Neumayer & Thomas Plümper, 2009. "SPDIR: Stata module to create directed dyad contagion spatial effect variable," Statistical Software Components S457013, Boston College Department of Economics, revised 02 Jul 2013.
  • Handle: RePEc:boc:bocode:s457013
    Note: This module should be installed from within Stata by typing "ssc install spdir". Windows users should not attempt to download these files with a web browser.

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