Wind-rose plot
Plot of a wind-rose. Wind frequencies may be supplied by speed intervals, and can be absolute or relative.
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", ...)
frec |
Data frame containing the wind frequencies. |
fnum |
Number of reference circles to plot. |
fint |
Frequency steps (in %) between reference circles. |
flab |
Parameter indicating which circles must be labelled:
|
ang |
Angle along which circles will be labelled. |
col |
Colors to fill the frequency polygons. |
margen |
Margins vector for the plot (to be passed to |
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. |
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.
No value is returned by this function.
data(windfr) rosavent(windfr, 4, 4, ang=-3*pi/16, main="Annual windrose")
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