[intro_demand_supply] Bug in matplotlib

[mmcky]

Currently the matplotlib figures are not displaying Chinese characters correctly

@longye-tian can you apply @HumphreyYang fix to the top code block to see if it fixes this issue #5

[longye-tian]

Hi Matt @mmcky ,

Thanks for point this out. I'll try to fix this.

After using @HumphreyYang's method, the issue persist.

In my local jupyter notebook, it looks okay. But when I view the deployment online it still doesn't work.

Best,
Longye

[HumphreyYang]

In addition to adding the code in the code cells, on the Linux machine/server, we need to add the Chinese font by adding the font SimHei.ttf to the mpl directory
(i.e.,

/home/humphrey/anaconda3/envs/quantecon/lib/python3.1/site-packages/matplotlib/mpl-data/fonts/ttf

)

I managed to make it work on my Linux server : )

(see more at https://stackoverflow.com/questions/40290004/how-can-i-configure-matplotlib-to-be-able-to-read-fonts-from-a-local-path)

[mmcky]

thanks @HumphreyYang I have seen this also -- perhaps we can use system wide fonts and passing a fonts property to the legend?

https://stackoverflow.com/questions/39630928/how-to-plot-a-figure-with-chinese-characters-in-label

[HumphreyYang]

thanks @HumphreyYang I have seen this also -- perhaps we can use system wide fonts and passing a fonts property to the legend?

https://stackoverflow.com/questions/39630928/how-to-plot-a-figure-with-chinese-characters-in-label

Hi @mmcky,

I tried this too, but I still need to add the ttf file into the mpl folder to make it work : (

[HumphreyYang]

This issue is solved by adding

import matplotlib as mpl
FONTPATH = "fonts/SourceHanSerifSC-SemiBold.otf"
mpl.font_manager.fontManager.addfont(FONTPATH)
plt.rcParams['font.family'] = ['Source Han Serif SC']

to imports at the beginning of the lecture.

See #35.

[mmcky]

Great -- that's what I thought. Cheers.

[HumphreyYang]

Hi @mmcky,

I found some PRs have not yet been updated to this solution. Maybe we should keep an eye on this?

[mmcky]

#61