Re: [Matplotlib-users] Polar bars and matplotlib 0.98.5

[Eric F. <ef...@ha...>]

Laurent Mychkine wrote:
> hi,
> 
> I'm using polar bars to plot windroses. Since the 0.98.5 version i have
> some issues with the plots.
> The 0° bar is not displayed in the good way. This bar is
> located between -0.26 radian and 0.26 radian but it is printed
> counterclockwise.
> It was working perfectly with matplotlib version 0.98.3. I just switched to
> version 0.98.5 because of the NaN bug of the previous version.

The bug was fixed on Jan. 2.  Can you install mpl from svn?  Or just 
patch your installation with the attached diff?  (Only the first hunk is 
critical for the bug.)

Eric

> 
> Any idea how i could make it work again ?
> Ty!!
> 
> from pylab import *
> nb_secteur=12
> 
> fig = figure(2,figsize=(8,8))
> ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True,)
> 
> thetagrids([90,45,0,315,270,225,180,135],
> labels=["N","NE","E","SE","S","SO","O","NO"])
> theta = arange(0.0-pi/nb_secteur, 2*pi-pi/nb_secteur, 2*pi/nb_secteur)
> 
> radii = [10.,20,10,5,3,4,3,4,6,4,2,9]
> 
> width = 2*pi/nb_secteur
> 
> bars = ax.bar(theta, radii, width=width, bottom=0.0 )
> for r,bar in zip(radii, bars):
> bar.set_facecolor( 'blue')
> bar.set_alpha(0.3)
> 
> text(1,0.69,"%",transform = ax.transAxes)
> show()
> 
> 
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