在matplotlib中显示外语(在虚拟环境中) [英] Display foreign language in matplotlib (in virtual env)

问题描述

我正在使用Jupyter中的matplotlib，并且我的数据包括朝鲜语字符. Matplotlib还不支持韩文字符，因此建议我在matplotlib上手动设置字符.在不设置字体的情况下，我的示例图替换了方形的空框.

I am working with matplotlib in Jupyter, and my data includes Korean characters. Matplotlib does not support Korean character yet, so I was advised to set character on matplotlib manually. Without setting the font, my sample graph displaces square empty boxes.

使用朝鲜语字符的示例情节.

Sample plot using Korean characters.

objects = ('사과', '배', '귤', '오렌지', '바나나', '수박')
y_pos = np.arange(len(objects))
performance = [10,8,6,4,2,1]

plt.bar(y_pos, performance, align='center', alpha=0.5)
plt.xticks(y_pos, objects)
plt.ylabel('Usage')
plt.title('Programming language usage')

plt.show()

以下是互联网上的一些示例，这是我所做的.

Following few examples on the internet, here's what I have done.

1. 下载朝鲜语字体(.ttf)
2. 将字体复制到我的Font目录('/Users/Library/Fonts')中
3. 重新启动Jupyter内核并进行测试

然后我再次运行matplotlib来查看结果是否正确，但是我仍然得到空框.

And I ran my matplotlib once more to see if it would turn out correctly, but I still get empty boxes.

这是我在Jupyter中运行的代码.

This is the code I ran in Jupyter.

from matplotlib import font_manager, rc
font_name = font_manager.FontProperties(fname = '/Users/Library/Fonts/custom/NanumBarunGothic.ttf').get_name()    
rc('font', family = font_name)

这是错误消息.

/Users/anaconda/envs/my_vir_env/lib/python3.4/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['NanumBarunGothic'] not found. Falling back to DejaVu Sans
  (prop.get_family(), self.defaultFamily[fontext]))

这就是我认为我做错了的事情.我没有将字体文件放在Jupyter的正确目录中，该文件在我的计算机上的virenv上运行.我的问题是这个目录在哪里?我检查了'font_manager.py'文件，但没有太多帮助.该文件显示我的操作系统字体目录确实是

So this is what I think I am doing wrong. I am not putting the font file in the right directory for my Jupyter, which is running on virenv on my machine. My question is where is this directory? I checked 'font_manager.py' file but I could not get much out of it. The file says that my OS font directory is indeed

用户/图书馆/字体

User/Library/Fonts

我非常感谢您的帮助！ 预先谢谢你！

I appreciate any help! Thank you in advance!

推荐答案

事实证明，它比我想象的要简单.如上文@ImportanceOfBeingErnest所述，关键是:

It turned out to be simpler than I thought. As mentioned above by @ImportanceOfBeingErnest, the key is to:

1. 安装字体
2. 删除字体缓存

就我而言，我找不到具有字体缓存的正确目录.我从此帖子中获得了帮助.

In my case, I was not able to find the right directory that had font cache. I got help from this post.

1. 下载所需字体.将其放在字体目录中.就我而言，它是Users/Library/Fonts/...
2. 找到字体缓存所在的目录.

在Jupyter中，在您的单元格中执行此操作.

In Jupyter, execute this in your cell.

from matplotlib import font_manager
fm = mpl.font_manager
fm.get_cachedir()
>> '/Users/.matplotlib'

1. 然后转到该目录并删除文件

转到shell并执行此命令.

Go to shell and execute this command.

rm fontList.py3k.cache

现在，当我执行matplotlib时，将显示正确的字体.

Now when I execute matplotlib, the correct font shows.

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