-------------------------------------------------------------------------------
help for circqqplot
-------------------------------------------------------------------------------

Quantile-quantile plot for circular data

        circqqplot varname1 varname2 [if exp] [in range] , centre(#1 [#2])
                 [yshow(numlist) xshow(numlist) plot(plot) qqplot_options]


Description

    circqqplot gives a quantile-quantile plot for two circular variables on a
    scale between 0 and 360 degrees. Note that the variables are not paired
    and do not even have to be non-missing for the same observations. Both
    variables are rotated so that each set of values is centred on a
    specified value.  Each is nevertheless labelled in terms of the original
    variables.


Options

    centre() is a required option. With one argument, it specifies a centre
        to be used for both variables. With two arguments, it specifies two
        centres to be used for the first and second variable respectively.
        The spelling center() is indulged.

    yshow() specifies a numlist of y axis labels to be shown, overriding the
        default.

    xshow() specifies a numlist of x axis labels to be shown, overriding the
        default.

    plot(plot) provides a way to add other plots to the generated graph; see
        help plot_option.

    qqplot_options are any options allowed with qqplot.


Examples

    . circqqplot axisasp wallasp, centre(45)


Author

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


Also see

    On-line: help for circqvm, diagplots