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TPVAR: Stata module to generate turning-point variable for graphics labelling

Author

Listed:
  • Nicholas J. Cox

    (University of Durham)

Programming Language

Stata

Abstract

tpvar generates a variable for use in labelling data points on a scatter plot with appropriate text that appears near point symbols. Given the current sort order, tpvar identifies observations in which the value of varname is either above both previous and following values or below both previous and following values. These are local maxima and minima, or turning points. A new variable newvar is generated for these turning points, which takes values of varname + above * range of varname and varname - below * range of varname for maxima and minima respectively. These values of newvar will often be good places to put text, just above and just below point symbols for varname.

Suggested Citation

  • Nicholas J. Cox, 1998. "TPVAR: Stata module to generate turning-point variable for graphics labelling," Statistical Software Components S345803, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s345803
    as

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    File URL: http://fmwww.bc.edu/repec/bocode/t/tpvar.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/t/tpvar.hlp
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