losing rgrids

Hi all,
I have found some bugs in my previous windrose plotter posted here, then I try
to remove them and set some improvements. Now I have a problem with rgrids
labels on polar axes, they disappear after a draw() command, and when I use
Rectangle on a polar axes, theview is not scaled, I have to make a draw()
(and rgrids labels go away :frowning: ).

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Lionel Roubeyrie - lroubeyrie@...1068...
LIMAIR
http://www.limair.asso.fr