来自matplotlib的泡菜图:2

Question

在Pickle figures from matplotlib之后，我试图从泡菜中加载一个数字。我使用的代码与响应中建议的修改相同。保存脚本：

import numpy as np
import matplotlib.pyplot as plt
import pickle as pl

# Plot simple sinus function
fig_handle = plt.figure()
x = np.linspace(0,2*np.pi)
y = np.sin(x)
plt.plot(x,y)
# plt.show()

# Save figure handle to disk
pl.dump(fig_handle,file('sinus.pickle','wb'))

加载脚本：

import matplotlib.pyplot as plt
import pickle as pl
import numpy as np

# Load figure from disk and display
fig_handle = pl.load(open('sinus.pickle', 'rb'))
fig_handle.show()

保存脚本生成一个名为"sinus.pickle“的文件，但是加载文件没有显示预期的数字。有什么建议吗？

Python 2.7.13 matplotlib 2.0.0 numpy 1.12.1

附注：根据一项建议，将fig_handle.show()替换为pat.show()，这会产生一个错误:跟踪(最近一次调用)：

File "/usr/local/lib/python2.7/
   site-packages/matplotlib/backends/backend_macosx.py", line 109, 
   in_set_device_scale
   self.figure.dpi = self.figure.dpi / self._device_scale * value
   File "/usr/local/lib/python2.7/site-packages/matplotlib/figure.py", 
   line  416, in _set_dpi
   self.callbacks.process('dpi_changed', self)
   File "/usr/local/lib/python2.7/site-packages/matplotlib/cbook.py", 
   line  546, in process
   if s in self.callbacks:
   AttributeError: 'CallbackRegistry' object has no attribute 'callbacks'

Answer 1

最后的解决方案包括将fig_handle.show()修改为plt.show()，并根据ImportanceOfBeingErnest的建议修改"TkAgg“后端

Answer 2

你所谓的“加载脚本”没有任何意义。

从您在问题中提供的链接来看，加载选定的图形非常简单，如下所示：

# Load figure from disk and display
fig_handle2 = pl.load(open('sinus.pickle','rb'))
fig_handle2.show()