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help for ^lprplot^                                         (statalist: 18aug1998)
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Logistic regression partial residual plots
-------------------------------------------

        ^lprplot^ indepvar [^,^ ^bw^idth^(^#^)^ graph_options ]


Description
------------

^lprplot^ produces a partial residual plot after ^logistic^ regression.
The plot is computed as described in Landwehr, Pregibon, and Shoemaker (1984).

Warning:  ^lprplot^ is computationally intensive and may take a long time to
          run.  It uses ^ksm, lowess^ to produce the smoothed plot.  Lowess
          calculations on 1,000 observations, for instance, require estimating
          1,000 regressions.

Note: ^lprplot^ will not work if ^logistic^ was used with weights.


Options
--------

^bwidth(^#^)^ specifies the bandwidth for smoothing.  Default is 0.8.
    See help @ksm@ for details.

graph_options are any of the options allowed with ^graph, twoway^.
    See help @graph@.


Examples
---------

        . ^logistic y x1 x2 x3^
        . ^lprplot x3^


Author
-------

        Bill Sribney
        Stata Corporation
        702 University Drive East
        College Station, TX 77840
        Phone: 409-696-4600
               800-782-8272
        Fax:   409-696-4601
        email: tech_support@@stata.com


Reference
----------

Landwehr, J.M., D. Pregibon, and A.C. Shoemaker. 1984.  Graphical methods
    for accessing logistic regression models.  JASA, 79: 61-71.


Also see
---------

 Manual:  ^[R] logistic, [R] ksm; [R] fit^
On-line:  help for @logistic@, @ksm@, @fit@
