Question

我在Macbook Pro（OSX 10.13.6）上使用带有Matplotlib的plt.show（）绘制数据时，似乎总是发生此问题。如果创建一个Pandas数据框并使用Matplotlib绘制数据，然后在交互式窗口（使用plt.show）中在屏幕上显示结果，则该窗口（和matplotlib）通常会崩溃。如果在屏幕上完成了用于向上或向下滚动的鼠标手势，则总是会发生这种情况。其他时候，它似乎是随机发生的。

剧情崩溃时，我将此作为回溯：

Traceback (most recent call last):
File "./plot_lc_vs_gnss.py", line 117, in <module>
  main()
File "./plot_lc_vs_gnss.py", line 28, in main
  plt.show()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/matplotlib/pyplot.py", line 253, in show
  return _show(*args, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/matplotlib/backend_bases.py", line 208, in show
  cls.mainloop()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/matplotlib/backends/_backend_tk.py", line 1073, in mainloop
  Tk.mainloop()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/tkinter/__init__.py", line 557, in mainloop
  _default_root.tk.mainloop(n)
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

我正在读取的数据是一个简单的CSV，以前也是由熊猫生成的。我正在用一个简单的脚本生成绘图，如下所示：

#!/usr/local/bin/python3
import matplotlib
matplotlib.use('TkAgg') 
import json
import os
import numpy as np
import pandas as pd
import pymap3d as pm
import matplotlib.pyplot as plt

def load_csvs():
gnss = pd.read_csv('di3_d4_1017_gnss.csv')
ins = pd.read_csv('di3_d4_1017_ins.csv')

return gnss, ins

def plot_cdf(gnss, ins):

data = [gnss, ins]

    plt.figure(figsize=[12,9])
    ax = plt.subplot(1,1,1)

    for ds in data:
        if ds[err].any != np.nan:
            dsorted = np.sort(ds['horizontal_error'])
            yvals = np.arange(len(dsorted)) / float(len(dsorted) - 1) * 100
            ax.plot(dsorted, yvals)
    ax.grid()
    ax.set_xlabel('Horizontal Error (m)')
    ax.set_ylabel('Percent of Epochs')
    title = 'Drive Test data \n DI-3 (roof) d4_1017 \n CDF Horizontal Error'
    plt.title(title)
    plt.legend(['gnss', 'ins'], loc='lower right')


def main():
gnss, ins = load_csvs()

plot_cdf(gnss, ins)
plt.show()

if __name__ == "__main__":
main()

任何有关如何解决此问题的建议将不胜感激。

Answer 1

我猜现在已经没有关系，但这似乎是#9637讨论中尚未解决的问题

如果在情节上使用鼠标滚动，Matplotlib交互式情节将崩溃

1 个答案: