Wind rose

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A wind rose diagram showing the relative frequency of directions from where the wind is coming from.

Some links about wind roses

Here is an example of a windrose with wind speed information.
Did you know the first wind rose was plotted in 1843?
There is some frustration in being able to plot wind roses.
There is a free, but very large plotting program GMT-3 that has a routine psrose that will plot wind roses, as in this example.
Here is a software product that will plot wind roses.

A wind rose with `vplot`

Here are the scripts and data to make the wind rose:

Download either sfo1998.dat.gz (116 kb) and decompress it with gunzip sfo1998.dat.gz . Or grab sfo1998.dat (587 kb). Column 5 in sfo1998.dat has the windspeed in knots, and column 6 the wind direction (from where it is coming from) in degrees.
Download BinTheData.py, which reads sfo1998.dat and outputs rosebin.dat .
Download roseplot.py which reads rosebin.dat and produces temp.eps.