Re: [Matplotlib-users] Polar plotting clockwise and rotated

[Ng, E. <enr...@lm...>]

The rotation and resetting of the labels isn't a big issue.
The issues is when I reverse the direction.  Matplotlib seems to only
want to plot in an anti-clockwise direction.  I can transform the data
to be backwards so that it looks ok,  however when it tries to connect
the start and end points, it goes back around and draws a circle instead
of just connecting the two points using a straight line. 

On Tuesday 21 April 2009 08:36:35 Michler, Matthias wrote:
Hi Enrico,

I'm afraid that this functionality is missing in matplotlib, but I'm not
an
expert so there is still hope that this can be easily achieved.

A work around, that comes to my mind is resetting the label values using
an
idea from another mail on this list
( thetagrids( range(0,360,45), ('E', 'NE', 'N','NW', 'W', 'SW', 'S',
'SE') ) )

label_values = [item % 360 for item in range(90, -260, -45)]
thetagrids( range(0,360,45), label_values)

and using some well defined (linear) transformation for plotting -
translating
your data to the actual tick positions and corresponding labels.

best regards Matthias