Thanks for looking into this further. Can you file a bug with this script that appears differently in the PDF/PS/SVG/Agg backends vs. Mac OS X?
Cheers, Mike Tony S Yu wrote: > > On Nov 11, 2009, at 1:33 PM, Michael Droettboom wrote: > >> Which older revision (or release) worked as you expected? > > After some digging, I think this issue is caused by an error in the > macosx backend (everything works fine with tkagg, qt4agg, and agg). > Oddly enough, calling savefig(), instead of show(), with the macosx > backend creates the correct plot, but calling savefig() after show() > does not. > > I'm actually not sure if my code worked for older revisions of the > macosx backend (I may have had a different default backend before). > The transform code doesn't work with revisions between 7950 and 7625; > older versions break the macosx backend on my system (OS X 10.6.1). > > -Tony > > >> >> Mike >> >> Tony S Yu wrote: >>> Hi, >>> >>> Awhile back, Jae-Joon helped me transform collection sizes from >>> points to data values by overriding the `get_transform` method of >>> a RegularPolyCollection (see example code below). >>> >>> When I tried the code today, the collection didn't appear on the >>> plot. Removing the get_transform method below brings the collection >>> back, but of course, the sizes are not what I want. >>> >>> Some simple testing suggests that changing the transform returned >>> by `get_transform` changes the offsets of the collection items. In >>> other words, the transform originally (i.e. in some older revision) >>> modified only the scale of collection items, but now appears to >>> modify both the scale and offset. >>> >>> Is there a way to modify only the scale of collection items? >>> >>> Thanks, >>> -Tony >>> >>> BTW, I'm on svn r7950. >>> >>> #----------------- >>> # The squares will not show up with the code below >>> # Comment out the get_transform method to see squares >>> # Change scale_x and scale_y to values close to 1 to see how they >>> change both scale and offset >>> >>> class SquareCollection(collections.RegularPolyCollection): >>> """Return a collection of squares.""" >>> >>> def __init__(self, **kwargs): >>> super(SquareCollection, self).__init__(4, rotation=np.pi/4., >>> **kwargs) >>> >>> def get_transform(self): >>> """Return transform scaling circle areas to data space.""" >>> ax = self.axes >>> pts2pixels = 72.0 / ax.figure.dpi >>> scale_x = pts2pixels * ax.bbox.width / ax.viewLim.width >>> scale_y = pts2pixels * ax.bbox.height / ax.viewLim.height >>> return transforms.Affine2D().scale(scale_x, scale_y) >>> >>> ax = plt.gca() >>> circle_areas = np.pi * np.ones(4) >>> xy = [(0, 0), (0, 1), (1, 0), (1, 1)] >>> squares = SquareCollection(sizes=circle_areas, >>> offsets=xy, transOffset=ax.transData, >>> facecolor='black') >>> ax.add_collection(squares, autolim=True) >>> plt.axis([-0.5, 1.5, -0.5, 1.5]) >>> plt.show() >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> >>> >>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 >>> 30-Day trial. Simplify your report design, integration and >>> deployment - and focus on what you do best, core application coding. >>> Discover what's new with >>> Crystal Reports now. http://p.sf.net/sfu/bobj-july >>> _______________________________________________ >>> Matplotlib-users mailing list >>> Matplotlib-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >>> >> >> -- >> Michael Droettboom >> Science Software Branch >> Operations and Engineering Division >> Space Telescope Science Institute >> Operated by AURA for NASA >> > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
