Enthought - matplotlib（plot（）函数的问题）

Question

I am trying to use matplotlib on Canopy Express. Even simple code does not run...

NOTE: the system does not recognize the plot(x) function. It seems there is something with ASCII X Unicode. My computer uses Unicode English(US).

From the console we have:

 C:\Users\dafonseca\AppData\Local\Enthought\Canopy\User\lib\site-packages\matplotlib\font_manager.py in createFontList(fontfiles, fontext)
        582                 continue
        583             try:
    --> 584                 prop = ttfFontProperty(font)
        585             except KeyError:
        586                 continue

C:\Users\dafonseca\AppData\Local\Enthought\Canopy\User\lib\site-packages\matplotlib\font_manager.py in ttfFontProperty(font)
        396         sfnt2 = ''
        397     if sfnt4:
    --> 398         sfnt4 = sfnt4.decode('ascii').lower()
        399     else:
        400         sfnt4 = ''

UnicodeDecodeError: 'ascii' codec can't decode byte 0x82 in position 0: ordinal not in range(128)'

import numpy as np
import matplotlib.pyplot as plt

    x = np.linspace(0, 10)
    line, = plt.plot(x, np.sin(x), '--', linewidth=2)
    dashes = [10, 5, 100, 5] # 10 points on, 5 off, 100 on, 5 off
    line.set_dashes(dashes)
    plt.show()

Answer 1

This is a known issue in matplotlib 1.3.0 that relates to having a non-ASCII character in one of your font names (possibly the Æ character).

You can either find and remove the offending font (the best idea) or try to patch your installation using the following procedure:

Open the following in a text editor:

\\Users\\dafonseca\\AppData\\Local\\Enthought\\Canopy\\User\\lib\\site- packages\\matplotlib\\font_manager.py

Search for sfnt4 = sfnt4.decode('ascii').lower()

And replace with sfnt4 = sfnt4.decode('ascii', 'ignore').lower()

Note that this bug won't exist in the next release of matplotlib.