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help for circhistogram
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Histogram for circular data with wrapping round of bins 

        circhistogram varname [weight] [if exp] [in range] [ , pad(#)
                 histogram_options ]

    fweights are allowed; see help weights.

    The abbreviation circhist (only) is allowed.


Description 

    circhistogram produces a histogram for varname with some wrapping round
    of bins. varname should be a circular variable taking on values between 0
    and 360 degrees.


Options 

    pad() places a pad of # degrees at each end. Data less than or equal to #
        degrees are copied at the right end of the axis for a horizontal
        interval of 360 to 360 + # degrees. Data more than 360 - # degrees
        are copied at the left end of the axis for a horizontal interval of
        -# to 0 degrees. The default is 180, so that a full two cycles are
        shown.

    histogram_options are any of the options allowed with histogram, except
        that at present only the display of frequencies is supported.


Examples

    . circhistogram wallasp, start(-180) width(30)

    . circhistogram wallasp, pad(90) start(-90) width(30)


Author 

    Nicholas J. Cox, University of Durham, U.K.
    n.j.cox@durham.ac.uk


Also see 

    On-line: help for histogram, circkdensity