Seaborn matplotlib：无法获得 window 范围 w/o 渲染器（RuntimeError）

Question

我正在尝试绘制 seaborn clustermap（它不适用于 heatmap 也) 与以下，没有 NaNs 承认：

import numpy as np
import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt

def plotClusterMap():
    a = pd.DataFrame(np.matrix('1 2; 3 4'))
    print a
    fig = plt.figure()
    sns.clustermap(a)
    plt.show()

a 格式正确：

   0  1
0  1  2
1  3  4

控制台输出：

Traceback (most recent call last):
  File "main.py", line 78, in <module>
    main()
  File "main.py", line 72, in main
    heatmapPlotter.plotClusterMap()
  File "/Users/username/code.py", line 12, in plotClusterMap
    sns.clustermap(a)
  File "/Library/Python/2.7/site-packages/seaborn/matrix.py", line 895, in clustermap
    **kwargs)
  File "/Library/Python/2.7/site-packages/seaborn/matrix.py", line 813, in plot
    self.plot_matrix(colorbar_kws, mask, **kws)
  File "/Library/Python/2.7/site-packages/seaborn/matrix.py", line 803, in plot_matrix
    cbar_kws=colorbar_kws, mask=mask, **kws)
  File "/Library/Python/2.7/site-packages/seaborn/matrix.py", line 292, in heatmap
    plotter.plot(ax, cbar_ax, kwargs)
  File "/Library/Python/2.7/site-packages/seaborn/matrix.py", line 177, in plot
    if axis_ticklabels_overlap(xtl):
  File "/Library/Python/2.7/site-packages/seaborn/utils.py", line 374, in axis_ticklabels_overlap
    bboxes = [l.get_window_extent() for l in labels]
  File "/usr/local/lib/python2.7/site-packages/matplotlib/text.py", line 796, in get_window_extent
    raise RuntimeError('Cannot get window extent w/o renderer')
RuntimeError: Cannot get window extent w/o renderer

Mac OSX: ~~10.9~~ 10.10.3 (编辑)
Seaborn：0.5.1
Matplotlib：1.3.1（刚刚从 1.4 降级）
麻木：1.8.0
Python: 2.7.9

Answer 1

我正在使用 Mac OS X 10.9.5、python 2.7.9、matplotlib 1.4.3 和 seaborn 0.5.1。我能够重现错误。

默认情况下，我使用 macosx matplotlib 后端。如果我将后端更改为 qt4agg（需要 PyQt4）、tkagg 或 webagg，您的代码就可以工作。这是对我有用的脚本：

import numpy as np
import pandas as pd

import matplotlib
matplotlib.use('qt4agg')  # Can also use 'tkagg' or 'webagg'

import matplotlib.pyplot as plt
import seaborn as sns


def plotClusterMap():
    a = pd.DataFrame(np.matrix('1 2; 3 4'))
    print a
    # fig = plt.figure()
    sns.clustermap(a)
    plt.show()


if __name__ == "__main__":
    plotClusterMap()

请注意，我注释掉了 fig = plt.figure()。 clustermap似乎在创造自己的身影。

Seaborn matplotlib：无法获得 window 范围 w/o 渲染器（RuntimeError）

Seaborn matplotlib: Cannot get window extent w/o renderer (RuntimeError)

python

macos

numpy

matplotlib

seaborn