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SPIKEPLT: Stata module to generate spike plot showing fine structure of the data

Author

Listed:
  • Nicholas J. Cox

    (University of Durham)

  • Tony Brady

    (Royal Postgraduate Medical School)

Programming Language

Stata

Abstract

spikeplt produces a spike plot, histogram or rootogram for varname that will show some of the fine structure of the data. varname is plotted on the x-axis. The frequency of each value, after any rounding, and applying any weight, is shown by a vertical spike drawn from a reference level (by default 0). If used to produce histograms, the default is to show raw frequencies in each bin or interval. In contrast to 'graph, histogram', there is no restriction to a maximum of 50 bins, and a few hundred spikes may be tolerable, especially if there are interesting gaps, clusters or preferred values. Berry uses the name `spike chart' for this kind of histogram. If used to produce time series plots, the varname would be the time variable, and the weight variable would be the values for those times. Chapman and Mahon used the name `spike graph' for such a plot.This is version 1.6.2 of the software.

Suggested Citation

  • Nicholas J. Cox & Tony Brady, 1998. "SPIKEPLT: Stata module to generate spike plot showing fine structure of the data," Statistical Software Components S321001, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s321001
    as

    Download full text from publisher

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