Hi Ryan
Thanks for your reply.
I am using 0.99.3 from Debian ...
On Wed, Sep 15, 2010 at 3:18 PM, Ryan May <rma...@gmail.com> wrote:
> On Wed, Sep 15, 2010 at 7:27 AM, Oz Nahum <nahu...@gmail.com> wrote:
> > Hi Everyone,
> >
> > I'm trying to make a quiver plot using the example in examples
> collection.
> > The documentation says that I can define the arrow units as:
> >
> > units: [‘width’ | ‘height’ | ‘dots’ | ‘inches’ | ‘x’ | ‘y’ | ‘xy’]so I
> did:
> > from pylab import *
> > from numpy import ma
> >
> > X,Y = meshgrid( arange(0,2*pi,.2),arange(0,2*pi,.2) )
> > U = cos(X)
> > V = sin(Y)
> >
> >
> > figure()
> > M = sqrt(pow(U, 2) + pow(V, 2))
> > Q = quiver( X, Y, U, V, M, units='x', pivot='tip', width=0.022,
> > scale=1/0.15)
> >
> > Q = quiver( X, Y, U, V, M, units='xy', pivot='tip', width=0.022,
> > scale=1/0.15)
> >
> > qk = quiverkey(Q, 0.9, 1.05, 1, r'$1 \frac{m}{s}$',
> > labelpos='E',
> > fontproperties={'weight': 'bold'})
> > plot(X, Y, 'k.')
> > axis([-1, 7, -1, 7])
> > title("scales with x view; pivot='tip'")
> > show()
> >
> >
> > When I actually try the option 'xy' I get the following error:
> >
> > Exception in Tkinter callback
> > Traceback (most recent call last):
> > File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1413, in __call__
> > return self.func(*args)
> > File
> "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py",
> > line 212, in resize
> > self.show()
> > File
> "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py",
> > line 215, in draw
> > FigureCanvasAgg.draw(self)
> > File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py",
> > line 314, in draw
> > self.figure.draw(self.renderer)
> > File "/usr/lib/pymodules/python2.6/matplotlib/artist.py", line 46, in
> > draw_wrapper
> > draw(artist, renderer, *args, **kwargs)
> > File "/usr/lib/pymodules/python2.6/matplotlib/figure.py", line 773, in
> > draw
> > for a in self.axes: a.draw(renderer)
> > File "/usr/lib/pymodules/python2.6/matplotlib/artist.py", line 46, in
> > draw_wrapper
> > draw(artist, renderer, *args, **kwargs)
> > File "/usr/lib/pymodules/python2.6/matplotlib/axes.py", line 1735, in
> draw
> > a.draw(renderer)
> > File "/usr/lib/pymodules/python2.6/matplotlib/artist.py", line 46, in
> > draw_wrapper
> > draw(artist, renderer, *args, **kwargs)
> > File "/usr/lib/pymodules/python2.6/matplotlib/quiver.py", line 436, in
> > draw
> > self._init()
> > File "/usr/lib/pymodules/python2.6/matplotlib/quiver.py", line 425, in
> > _init
> > trans = self._set_transform()
> > File "/usr/lib/pymodules/python2.6/matplotlib/quiver.py", line 481, in
> > _set_transform
> > raise ValueError('unrecognized units')
> > ValueError: unrecognized units
> >
> > Can someone point to where am I mistaken ? Is it a mistake in the
> > documentation ?
>
> Your code works fine for me here on 1.0.0. What version are you running?
>
> Ryan
>
> --
> Ryan May
> Graduate Research Assistant
> School of Meteorology
> University of Oklahoma
>
--
Oz Nahum
Graduate Student
Zentrum für Angewandte Geologie
Universität Tübingen
---
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it isn't hard to do
Nothing to kill or die for
And no religion too
Imagine all the people
Living life in peace
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