assertion error with xkcd

Development matplotlib-devel
1

This was using pdfpages (if that matters)

Traceback (most recent call last):
  File "./plot_stuff2.py", line 326, in <module>
    the_plot.finish (args, opt, time, res)
  File "./plot_stuff2.py", line 145, in finish
    self.pdf.savefig (self.fig)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backends/backend_pdf.py", line 2297, in savefig
    figure.savefig(self, format='pdf', **kwargs)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/figure.py",
line 1421, in savefig
    self.canvas.print_figure(*args, **kwargs)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backend_bases.py", line 2220, in print_figure
    **kwargs)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backends/backend_pdf.py", line 2340, in print_pdf
    self.figure.draw(renderer)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/artist.py",
line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/figure.py",
line 1034, in draw
    func(*args)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/artist.py",
line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/text.py",
line 589, in draw
    self._fontproperties, angle)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/patheffects.py", line 102, in draw_text
    self._draw_text_as_path(renderer, gc, x, y, s, prop, angle, ismath)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/patheffects.py", line 112, in _draw_text_as_path
    ismath)
  File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backend_bases.py", line 526, in _get_text_path_transform
    path = Path(verts, codes)
  File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/path.py",
line 147, in __init__
    assert vertices.ndim == 2
AssertionError

2

Can you provide a code example to reproduce this. I suspect that recent work on path effects might be to blame here. Also, exactly which version of matplotlib and numpy were you using? The assert was placed there about a year ago IIRC to deal with a short-lived numpy bug.

3

Can you provide a standalone example to reproduce? The multipage_pdf.py example works fine with xkcd switched on.

Mike

···

On 10/23/2013 08:01 AM, Neal Becker wrote:

This was using pdfpages (if that matters)

Traceback (most recent call last):
   File "./plot_stuff2.py", line 326, in <module>
     the_plot.finish (args, opt, time, res)
   File "./plot_stuff2.py", line 145, in finish
     self.pdf.savefig (self.fig)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backends/backend_pdf.py", line 2297, in savefig
     figure.savefig(self, format='pdf', **kwargs)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/figure.py",
line 1421, in savefig
     self.canvas.print_figure(*args, **kwargs)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backend_bases.py", line 2220, in print_figure
     **kwargs)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backends/backend_pdf.py", line 2340, in print_pdf
     self.figure.draw(renderer)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/artist.py",
line 54, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/figure.py",
line 1034, in draw
     func(*args)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/artist.py",
line 54, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/text.py",
line 589, in draw
     self._fontproperties, angle)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/patheffects.py", line 102, in draw_text
     self._draw_text_as_path(renderer, gc, x, y, s, prop, angle, ismath)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/patheffects.py", line 112, in _draw_text_as_path
     ismath)
   File "/home/nbecker/.local/lib/python2.7/site-
packages/matplotlib/backend_bases.py", line 526, in _get_text_path_transform
     path = Path(verts, codes)
   File "/home/nbecker/.local/lib/python2.7/site-packages/matplotlib/path.py",
line 147, in __init__
     assert vertices.ndim == 2
AssertionError

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