.-
help for ^warpden^                                            (STB-27: snp6.2)
.-

WARPing density estimation 
--------------------------

    ^warpden^ varname [^if^ exp] [^in^ range] ^,^ ^b^width^(^#^)^ ^k^ercode^(^#^)^ ^m^val^(^#^)^ 
           [^g^en^(^denvar midvar^)^ ^nos^ort ^st^ep ^nog^raph graph_options]


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

^warpden^ calculates and graphs ASH-WARPing estimates of univariate densities.


Options
-------

^b^width^(^#^)^ specifies the smoothing parameter (binwidth for histograms,
    frequency polygons and averaged shifted histograms or FP-ASH; bandwidth
    for kernel density estimators).

^k^ercode^(^#^)^ specifies the weight function (kernel) used to calculate the density
    according to the following codes:

        1 = uniform
 	2 = triangle 
 	3 = Epanechnikov
 	4 = quartic (biweight)
 	5 = triweight
 	6 = Gaussian

^m^val^(^#^)^ is the number of shifted histograms to average.

^g^en^(^denvar midvar^)^ specifies two new variables to contain the estimated
    densities and corresponding midpoints, respectively.

^nos^ort indicates that the data are already sorted by ^varname^.

^st^ep specifies the use of the histogram-like (ASH) estimate.  By default, the
    the linearly interpolated (FP) estimate is used.

^nog^raph suppresses the graph.

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


Examples
--------
  
 . ^warpden snow, bwidth(10) mval(1) kercode(2) step^
 . ^warpden snow, b(10) m(1) k(2)^
 . ^warpden snow, b(10) m(5) k(2) step^
 . ^warpden bodlen, b(10) m(15) k(4) gen(denq10 mid10) nog^


Authors
-------

        Isaias H. Salgado-Ugarte, Makoto Shimizu and Toru Taniuchi
        University of Tokyo, Faculty of Agriculture,
        Department of Fisheries, Yayoi 1-1-1, Bunkyo-ku
        Tokyo 113, Japan.
        FAX:    81-3-3812-0529
        EMAIL:  fes01@@tzetzal.dcaa.unam.mx


Also see
--------

    STB:  STB-27 snp6.2, STB-26 snp6.1, STB-16 snp6
On-line: help for @kerneld@, @bandw@, @l2cvwarp@, @bcvwarp@