TclError in TkAgg with version 2.2.0rc1 #10479
Description
Running the following minimal code in version 2.2.0rc1 (on windows 8.1, python 2.7)
import matplotlib
matplotlib.use("TkAgg")
import matplotlib.pyplot as plt
print matplotlib.__version__ # 2.2.0rc1
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot([1,2,3], [1,3,1])
plt.show()
produces a TclError: error reading data, expected ptr height width:
Exception in Tkinter callback
Traceback (most recent call last):
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\lib-tk\Tkinter.py", line 1536, in __call__
return self.func(*args)
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 228, in resize
self.draw()
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 300, in draw
tkagg.blit(self._tkphoto, self.renderer._renderer, colormode=2)
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\tkagg.py", line 34, in blit
dataptr, colormode, bboxptr)
TclError: error reading data, expected ptr height width
Exception in Tkinter callback
Traceback (most recent call last):
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\lib-tk\Tkinter.py", line 1536, in __call__
return self.func(*args)
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\lib-tk\Tkinter.py", line 587, in callit
func(*args)
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 320, in idle_draw
self.draw()
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 300, in draw
tkagg.blit(self._tkphoto, self.renderer._renderer, colormode=2)
File "c:\winpython\winpython-64bit-2.7.10.3\python-2.7.10.amd64\lib\site-packages\matplotlib\backends\tkagg.py", line 34, in blit
dataptr, colormode, bboxptr)
TclError: error reading data, expected ptr height width
Note that the error appears twice. A figure window is opened, but is empty:
The same code using Qt4Agg runs fine.
[I installed the the rc1 as matplotlib‑2.2.0rc1‑cp27‑cp27m‑win_amd64.whl from https://www.lfd.uci.edu/~gohlke/pythonlibs]