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Description
Bug report
In matplotlib 2.x.x, ValueError: All values in the dash list must be positive will be raised if linewidth is set to zero while it seems to work in matplotlib 1.5.x. No idea whether it is a bug or you intend to do so, but my macro don't work anymore because of this...
Code for reproduction
import matplotlib.pyplot as plt
x = [0, 1]
plt.plot(x, x, ls = '--', lw = 0)
plt.show()Actual outcome
- matplotlib 2.0.2
Traceback (most recent call last):
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1489, in __call__
return self.func(*args)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/backends/backend_tkagg.py", line 280, in resize
self.show()
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/backends/backend_tkagg.py", line 351, in draw
FigureCanvasAgg.draw(self)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py", line 464, in draw
self.figure.draw(self.renderer)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 63, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/figure.py", line 1144, in draw
renderer, self, dsu, self.suppressComposite)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/image.py", line 139, in _draw_list_compositing_images
a.draw(renderer)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 63, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/axes/_base.py", line 2426, in draw
mimage._draw_list_compositing_images(renderer, self, dsu)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/image.py", line 139, in _draw_list_compositing_images
a.draw(renderer)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/artist.py", line 63, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/lines.py", line 822, in draw
drawFunc(renderer, gc, tpath, affine.frozen())
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/lines.py", line 1267, in _draw_lines
self._lineFunc(renderer, gc, path, trans)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/lines.py", line 1297, in _draw_dashed
gc.set_dashes(self._dashOffset, self._dashSeq)
File "/home/chenyh/.local/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 1009, in set_dashes
raise ValueError("All values in the dash list must be positive")
ValueError: All values in the dash list must be positive
Expected outcome
- matplotlib1.5.1
Matplotlib version
- Operating System: Tested on both Ubuntu 14.04.5 LTS / Mac OS X 10.12.5
- Matplotlib Version: 2.0.2
- Python Version: 2.7.13
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