latex issure

[wang-jinbo]

version:2.0.0-beta8

let header = [ "$x_0$"; "迭代次数"; "数值结果"; "数值误差" ]

The thing is that I can't produce LaTeX output out of line, which can be produced under Plotly on python, MATLAB

[kMutagene]

Hi @Wongboo

I would really appreciate a full code example, but i managed latex output to work in principle.

The problem is MathJax (the tex rendering engine used in plotly tex examples) not being referenced in our HTML scaffold. For a workaround until this is properly implemented, add these script tags to the html:

<script type="text/x-mathjax-config;executed=true">MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']], processEscapes: true}});</script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML%2CSafe.js&ver=4.1"></script>

Additionally, as tex uses a lot of \ characters, your tex strings should be escaped using @:

[
    Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
    Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
]
|> Chart.Combine
|> Chart.Show

Which will then look like this:

From our side it is most likely the best to set this on the Config level of GenericChart, providing a Chart.withMathTex function indicating that the mathtex script should be contained in the html scaffold.

[wang-jinbo]

@kMutagene
I kind of understand, so this generally means that until the official support is established, We have to change the source code of Plotly.NET or manually add

<script type="text/x-mathjax-config;executed=true">MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']], processEscapes: true}});</script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML%2CSafe.js&ver=4.1"></script>

to the chart which might be too complicated since no API in GenericChart supports directly adding these script tags. Am I right?

[kMutagene]

or manually add [script tags]
to the chart which might be too complicated since no API in GenericChart supports directly adding these script tags. Am I right?

I can think of two workarounds that might work for you in the meantime:

• The output of Chart.Show is a html text file like any other, so you can open the files programmatically and add those lines.

• The GenericChart.toChartHTML returns the contents of that file as a string, so you can add these lines there and then write the content to a file like this:

   [
   Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
   Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
   ]
   |> Chart.Combine
   |> Chart.toChartHTML
   |> `add the missing lines`
   |> `write to a .html file`

[wang-jinbo]

So temporarily solution is to change the HTML directly through adding these lines.
In the long term, wait for the API change in MathJAX.
Thanks for your help!

[kMutagene]

Exactly, i don't imagine this feature taking too long to implement though

[kMutagene]

@Wongboo Watch out for the next release, you will be able to use Chart.WithMathTex:

[
    Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
    Chart.Line([(1.,2.)],@"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$")
]
|> Chart.Combine
|> Chart.withTitle @"$\beta_{1c} = 25 \pm 11 \text{ km s}^{-1}$"
|> Chart.WithMathTex(true)