Mathjax does not give a latex formula
In my rails application, I am using mathjax (TEX-AMS_HTML) to render latex formulas.
When entering formulas in comments, I use the codec decoding equation editor with TinyMCE.
My current mathjax config ontop (TEX-AMS_HTML):
"HTML-CSS": {linebreaks: { automatic: true, width: "container" }},
displayAlign: "left",
extensions: ["tex2jax.js","MathMenu.js","MathZoom.js"],
jax: ["input/TeX","output/HTML-CSS"],
TeX: { extensions: ["AMSmath.js","AMSsymbols.js","noErrors.js","noUndefined.js"] },
tex2jax: { ignoreClass: "w1", processClass: "active|comments-content" }
My problem is that some formulas are not being output, consider the following:
\[ foo\textup{bar} \]
This displays foo \ textup . I also noticed some symbols displaying text, for example:
\[ \AE \SS \]
This will make \ AE \ SS instead of matching characters.
I have tried switching to SVG by adjusting the inline / display settings and cannot seem to resolve the issue.
Does anyone have an idea why this is happening?
EDIT: Below is an example
<!DOCTYPE HTML>
<html lang="en">
<head>
<title>Mathjax</title>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
"HTML-CSS": {linebreaks: { automatic: true, width: "container" }},
displayAlign: "left",
extensions: ["tex2jax.js","MathMenu.js","MathZoom.js"],
jax: ["input/TeX","output/HTML-CSS"],
TeX: { extensions: ["AMSmath.js","AMSsymbols.js","noErrors.js","noUndefined.js"] },
tex2jax: { ignoreClass: "w1", processClass: "active|comments-content" }
});
</script>
<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML"></script>
</head>
<body>
<div id="wrapper">
<div id="main">
<div class="w1">
<div class="comments-content">
<p>\[foo\textup{bar}\AE\SS\]</p>
<p>\[K_{E}=\frac{1}{2}m(\frac{80}{3.6})^{2}\]</p>
</div>
</div>
</div>
</div>
</body>
</html>
which displays as: http://i.imgur.com/bUJXZPX.png
Note that while mathjax is running and displaying the second line correctly, the first latex line is not escaped.
EDIT2 (22/06/2017):
"Note from the future: cdn.mathjax.org is nearing the end of its term, check mathjax.org/cdn-shutting -down for migration tips (and maybe update your answer for future readers ) "- thanks to user Peter Krautzberger
This basically means that the cdn used in my sample code will need to be replaced with a localized version of mathjax.
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Macros \textup
, \AE
and \SS
are not part of the default MathJax TeX macros and are not defined in your built-in configuration, so the rendering in the image is highlighted in red.
You will see a more specific error if you remove extensions from noundefined
and noerrors
from your config that are also in the merged configTeX-AMS_HTML
, so you need to drop that as well; as you can see from the link, your inline config entails everything TeX-AMS_HTML
. (In production, it is preferable to use a combined config file as they are loaded as one large file.)
For a list of all default MathJax macros, see http://docs.mathjax.org/en/latest/tex.html#supported-latex-commands .
How to define macros in MathJax see https://tex.stackexchange.com/questions/139699/equivalent-of-mathup-for-upright-text-in-math-mode . Hence:
MathJax.Hub.Config({
TeX: {
Macros: {
RR: "{\\bf R}",
bold: ["{\\bf #1}",1]
}
}
});
ie, add block Macros
to block TeX
in your config.
(A special case is \textup
which is a LaTeX text mode macro, and MathJax focuses on math mode. Depending on the use case, the math equivalent might be \text{}
, \mathrm{}
or something else, see these TeX.SE questions . Of course you can define \textup
as anything, but you might run into the problem of backing up content to real TeX).
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