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hupili / python-for-data-and-media-communication-gitbook

An open source book on Python tailed for communication students with zero background
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CH09 Data Visualization Libraries Feedbacks #79

Closed FLYSTEPHEN closed 6 years ago

FLYSTEPHEN commented 6 years ago

matplotlib

ChicoXYC commented 6 years ago

matplotlib

  • plt.rcParams['font.sans-serif']=['SimHei'] Some computers like mine may find no 'SimHei' font and raise a UserWarning. We can recommend the readers to try fonts like 'Arial Unicode MS' if they encounter my problem. To see which fonts can be used here, I found a way from the Internet. It means the fonts with larger bytes are more likely to be Chinese fonts:
from matplotlib.font_manager import fontManager
import os
[font.name for font in fontManager.ttflist if os.path.exists(font.fname) and os.stat(font.fname).st_size>1e7]
#output: ['AppleMyungjo', 'AppleGothic', 'Arial Unicode MS']

plotly

  • plotly now need registration to be used. we can remind the readers to log in here and regenerate an api_key after registration. We also need to add a line:
plotly.tools.set_credentials_file(username='XXX(you own username)', api_key='xxxxxxxxxxxxxxxxxxxx(you own api_key)')

pyecharts

  • !pip install pyecharts When install pyecharts, someone may encounter this like me: error: command 'clang' failed with exit status 1 Then I googled and learned it's because of my lack of xcode command tools. The problem can be solved with operating !xcode-select --install in Jupyter. We can add this reminder.

@FLYSTEPHEN THANKS a lot. For question1. thats the reason why I write the Q&A for how to support Chinese character in matplotlib :https://github.com/hupili/python-for-data-and-media-communication-gitbook/blob/master/module-matplotlib.md#how-to-display-chinese-characters-when-using-matplotlib

For question 2 & 3, I need to check again, I will reply you soon.

FLYSTEPHEN commented 6 years ago

You are right. I should have read the Q&A. This note can also help us understand the mechanism behind this library.

hupili commented 6 years ago

https://github.com/hupili/python-for-data-and-media-communication/blob/master/matplotlib-examples/Chinese%20Font.ipynb

also add this to relevant places. this is more primitive approach for Mac users to find and choose font

ChicoXYC commented 6 years ago

@FLYSTEPHEN About plotly. This is because I use the plot online method, which requires an account. I just updated the plot.offline method, you can try without creating an account. https://github.com/hupili/python-for-data-and-media-communication-gitbook/blob/master/notes-week-09.md#plotly