thanks @HumphreyYang. It appears this isn't the driving issue though

latex was not able to process the following string:
b'$E[y_t]$ \\u968f\\u65f6\\u95f4\\u53d8\\u5316'

still getting this lecture failure. I will have to take a closer look.

Many thanks @mmcky,

This is wierd, but I think it might still be beneficial to have these added to the matplotlib paramters : )

thanks @HumphreyYang that cell is not working if there are ANY chinese characters used. All lines need to be removed for the latex to work. Is there an unusual character in each line? Do we need to enable an extended chinese character set?

One solution is to declare any missing unicode in a preamble.

matplotlib/matplotlib#20262

but I think that is probably not a great solution in this case.

Many thanks @mmcky,

This is strange. I thought it is related to matplotlib titles. Is xlabel working?

Many thanks @mmcky,

This is strange. I thought it is related to matplotlib titles. Is xlabel working?

No if any combination is enabled the latex conversion fails. matplotlib uses latex rather than xelatex under the hood to render the latex math and it is struggling with the chinese characters.

Thanks @mmcky,

That's sad : ( I wonder why we did not hit this issue in the intro series.

Thanks @mmcky,

That's sad : ( I wonder why we did not hit this issue in the intro series.

It's only an issue with this one code-cell as far as I can tell. The other lectures are running fine, that is why I was wondering if there was an unusual chinese character not defined in the standard utf8?

Hi Matt,

Let me try to rewrite this sentence and see if we get the same errror!

Hi Matt,

Let me try to rewrite this sentence and see if we get the same errror!

It's actually an issue for that lecture more broadly. I was looking at disabling the Chinese characters in matplotlib figure generation and for some reason that lecture is having issues.

Hi @mmcky, I think I know what happened!

I wrote this lecture with Tom and at that time I wanted to add matrices to the matplotlib plots. So I have those lines at the beginning:

mpl.rcParams['text.usetex'] = True
mpl.rcParams['text.latex.preamble'] = r'\usepackage{{amsmath}}'

Appearently this has forced matplotlib to use internel latex engine.

I guess all I need to do is to add the usage the package that support chinese characters here.

Hi @mmcky,

I fixed Kalman_2 in the latest push! Everything now runs perfectly on my end!

Nice work @HumphreyYang. Thanks. There is starting to be a lot of setup to include the characters in latex + matplotlib

thanks @HumphreyYang -- merging this to get the cache building. I have verified local execution as well.