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Description
Bug report
Support for longdouble was theoretically added in #8447. There is also code to test it out; unfortunately, it doesn't actually attempt to draw anything. Adding the draw causes it to crash.
Code for reproduction
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
ax.imshow(np.zeros((3, 3), dtype=np.longdouble))
fig.canvas.draw()Actual outcome
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/elliott/code/matplotlib/lib/matplotlib/backends/backend_tkagg.py", line 299, in draw
FigureCanvasAgg.draw(self)
File "/home/elliott/code/matplotlib/lib/matplotlib/backends/backend_agg.py", line 432, in draw
self.figure.draw(self.renderer)
File "/home/elliott/code/matplotlib/lib/matplotlib/artist.py", line 55, in draw_wrapper
return draw(artist, renderer, *args, **kwargs)
File "/home/elliott/code/matplotlib/lib/matplotlib/figure.py", line 1337, in draw
renderer, self, artists, self.suppressComposite)
File "/home/elliott/code/matplotlib/lib/matplotlib/image.py", line 138, in _draw_list_compositing_images
a.draw(renderer)
File "/home/elliott/code/matplotlib/lib/matplotlib/artist.py", line 55, in draw_wrapper
return draw(artist, renderer, *args, **kwargs)
File "/home/elliott/code/matplotlib/lib/matplotlib/axes/_base.py", line 2560, in draw
mimage._draw_list_compositing_images(renderer, self, artists)
File "/home/elliott/code/matplotlib/lib/matplotlib/image.py", line 138, in _draw_list_compositing_images
a.draw(renderer)
File "/home/elliott/code/matplotlib/lib/matplotlib/artist.py", line 55, in draw_wrapper
return draw(artist, renderer, *args, **kwargs)
File "/home/elliott/code/matplotlib/lib/matplotlib/image.py", line 568, in draw
renderer, renderer.get_image_magnification())
File "/home/elliott/code/matplotlib/lib/matplotlib/image.py", line 795, in make_image
unsampled=unsampled)
File "/home/elliott/code/matplotlib/lib/matplotlib/image.py", line 413, in _make_image
self.get_filterrad() or 0.0)
ValueError: Unsupported dtypeMatplotlib version
- Operating system: Fedora
- Matplotlib version: 2.1.0 &
master - Matplotlib backend (
print(matplotlib.get_backend())): TkAgg - Python version: 3.6
- Jupyter version (if applicable):
- Other libraries:
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