Re: [matplotlib-devel] Axes.scatter call fails since removal of PyCXX

[Thomas C. <tca...@gm...>]

Is there an issue for this (and if not can you make one)?

On Mon, Nov 17, 2014, 09:56 Joel B. Mohler <jo...@ki...> wrote:

> On Mon, Nov 17, 2014 at 09:36:50AM -0500, Joel B. Mohler wrote:
> > I think I see a breakage of the scatter call that I think should work
> and did
> > work before
> > https://github.com/matplotlib/matplotlib/commit/
> be34210a8c09fcd639ece583eb5c0acb855222b6
> >
> > This is running on windows 7 (32 bit) with numpy 1.8 and current master.
>
> Ugh, I tried this same example on my ubuntu box and it works.  I update
> this
> diagnosis to "scatter is broken on windows since removing PyCXX"; note
> that I
> do not get a traceback with the code below if I replace "scatter" with
> "plot".
>
> Being that windows devs are scarce, I'll be digging into this more.  I
> certainly welcome any clues as it seems very bizarre to me so far.
>
> Joel
>
> >
> > The example is:
> >
> > ***
> > import numpy
> > from matplotlib.backends.backend_agg import FigureCanvasAgg as
> FigureCanvas
> > from matplotlib.figure import Figure
> >
> > POINTS = 500
> >
> > figure = Figure(figsize=(6, 6), dpi=72)
> > ax = figure.add_subplot(1, 1, 1, projection=None)
> > scat = ax.scatter(numpy.arange(POINTS), numpy.sin(numpy.arange(POINTS)))
> > ***
> >
> > I get on current master
> >
> > ***
> > Traceback (most recent call last):
> >   File "C:\work\mpl_scatter_example.py", line 9, in <module>
> >     scat = ax.scatter(numpy.arange(POINTS),
> numpy.sin(numpy.arange(POINTS)))
> >   File "C:\Python27\lib\site-packages\matplotlib\axes\_axes.py", line
> 3690, in scatter
> >     self.add_collection(collection)
> >   File "C:\Python27\lib\site-packages\matplotlib\axes\_base.py", line
> 1459, in add_collection
> >     self.update_datalim(collection.get_datalim(self.transData))
> >   File "C:\Python27\lib\site-packages\matplotlib\collections.py", line
> 198, in get_datalim
> >     offsets, transOffset.frozen())
> >   File "C:\Python27\lib\site-packages\matplotlib\path.py", line 977, in
> get_path_collection_extents
> >     master_transform, paths, transforms, offsets,offset_transform))
> > ValueError: object too deep for desired array
> > ***
> >
> > I did very little troubleshooting beyond confirming that this works
> before the
> > merge mentioned in the first paragraph.
> >
> > Joel
>
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