rosavent {climatol}R Documentation

Wind-rose plot

Description

Plot of a wind-rose. Wind frequencies may be supplied by speed intervals, and can be absolute or relative.

Usage

  rosavent(frec, fnum = 4, fint = 5, flab = 2, ang = 3 * pi/16,
    col = rainbow(10, 0.5, 0.92, start = 0.33, end = 0.2),
    margen = c(0, 0, 4, 0), key = TRUE, uni = "m/s", ...)

Arguments

frec Wind frequencies.
fnum Number of reference circumferences to plot.
fint Frequency steps (in %) between reference circumferences.
flab Parameter indicating which circumferences must be labelled:
1:
Label outer circumference only,
2:
Label all circumferences,
Other value:
Do not label any circumference.
ang Angle along which circumferences will be labelled.
col Colors to fill the frequency polygons.
margen Margins vector for the plot (to be passed to par).
key Set to FALSE if you do not want a legend of the wind-rose, that will otherwise be plotted if frequencies are supplied by speed intervals.
uni Speed units for the legend header.
... Other graphic parameters.

Details

The number of direction classes is indifferent: As many as elements of the frequency vector (or columns of the matrix) will be considered, but the first element (column) must correspond to North. Frequencies will be converted to percentages, no matter how they were supplied.

Value

No value is returned by this function.

See Also

plot, par

Examples

  data(windfreq.dat)
  rosavent(windfreq.dat,4,4,ang=-3*pi/16,main="Annual windrose")

[Package climatol version 1.0.3.1 Index]