a windrose object, e.g. as created by as.windrose.
type
the thing to be plotted, either the number of counts in
the angle interval, the mean of the values in the interval, the
median of the values, or a fivenum representation of
the values.
col
an optional list of colours to use. If not set, the
colours will be c("red", "pink", "blue", "lightgray"). For
the first three types of plot, the first colour in this list is
used to fill in the rose, the third is used for the