Calibre mathjax

ELITSIO · 03-15-2016, 03:28 PM

Hello,

this drives me crazy. I have an ePub with equations and I load mathjax in the <head> section of htmls like that:

<script type="text/x-mathjax-config">MathJax.Hub.Config({jax: ["input/MathML","output/SVG"], extensions: ["mml2jax.js"], SVG: {linebreaks: {automatic: true, width:"container"}}});</script>
<script type="text/javascript" async="async" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js"></script>

When I edit the epub in calibre, equations show perfectly, with linebreaks and all! When I try to read the epub outside the editor in calibre viewer, the equations don't show! What am I doing wrong? I use calibre in mac.

thx
Elias.

kovidgoyal · 03-15-2016, 11:32 PM

The calibre viewer includes its own copy of matchjax. You should not be bundling mathjax with your epub. See the demo file http://manual.calibre-ebook.com/typesetting_math.html

ELITSIO · 03-16-2016, 01:19 AM

Thank you for the quick answer. I found out that when I don't include mathjax it shows ok. But what if I need to include mathjax for other browsers/readers?

Also, can I use the configuration part of mathjax to activate line breaking?

Thx

kovidgoyal · 03-16-2016, 01:32 AM

I really would not recommend bundling mathjax with ebooks, that is going to be pretty fragile, not to mention greatly increasing the size of the book.

You use a script tag with type text/x-mathjax-config for doing MathJax config. In it you have access to the MathJax object. Look at the example on the page I linked to earlier.

ELITSIO · 03-16-2016, 08:18 AM

I understand your opinion, but native mathml is also unstable and mathjax seems to show ok in ipad.

I am trying to find a way to conditionally load mathjax in the configuration file. I know one can have different configurations for different browsers. But could it be set to not load/ignored if the reader is calibre?

After many hours of experimenting with many readers, I found out that readium is pretty good but has a problem of not breaking math lines (I would appreciate if someone knows how to achieve it) and other readers have their own problems. (yes, I have set breaking lines in mathjax config)

Calibre seems to show everything perfectly to me... when mathjax is not trying to load...

thx
Elias

kovidgoyal · 03-16-2016, 08:53 AM

Conditionally loading is trivial. Simply run a script that inserts a new script tag into the DOM and set the src of the script tag to point to mathjax. Use the epubReadingSystem object to detect reading systems.

knorris · 04-01-2017, 01:35 AM

I can't get maths equations to show correctly in the Editor Preview Panel but works fine in Calibre Viewer.
Is there a simple remedy?
Thanks

BetterRed · 04-01-2017, 04:27 AM

Quote:

Originally Posted by knorris

I can't get maths equations to show correctly in the Editor Preview Panel but works fine in Calibre Viewer.
Is there a simple remedy?
Thanks

Moderator Notice
Asking the same question again won't get you a different answer - Kovid Goyal already gave you the answer elsewhere, no one is likely to offer a different answer to one given by the creator of calibre.

Please read the Mobileread Guidelines - item 3 in particular.

BR

03-15-2016, 03:28 PM	#1
ELITSIO Junior Member Posts: 9 Karma: 10 Join Date: Mar 2016 Device: iPad	Calibre mathjax Hello, this drives me crazy. I have an ePub with equations and I load mathjax in the <head> section of htmls like that: <script type="text/x-mathjax-config">MathJax.Hub.Config({jax: ["input/MathML","output/SVG"], extensions: ["mml2jax.js"], SVG: {linebreaks: {automatic: true, width:"container"}}});</script> <script type="text/javascript" async="async" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js"></script> When I edit the epub in calibre, equations show perfectly, with linebreaks and all! When I try to read the epub outside the editor in calibre viewer, the equations don't show! What am I doing wrong? I use calibre in mac. thx Elias.

03-16-2016, 01:32 AM	#4
kovidgoyal creator of calibre Posts: 45,299 Karma: 27111240 Join Date: Oct 2006 Location: Mumbai, India Device: Various	I really would not recommend bundling mathjax with ebooks, that is going to be pretty fragile, not to mention greatly increasing the size of the book. You use a script tag with type text/x-mathjax-config for doing MathJax config. In it you have access to the MathJax object. Look at the example on the page I linked to earlier. Last edited by kovidgoyal; 03-16-2016 at 01:36 AM.

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03-15-2016, 11:32 PM	#2
kovidgoyal creator of calibre Posts: 45,299 Karma: 27111240 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The calibre viewer includes its own copy of matchjax. You should not be bundling mathjax with your epub. See the demo file http://manual.calibre-ebook.com/typesetting_math.html

03-16-2016, 01:19 AM	#3
ELITSIO Junior Member Posts: 9 Karma: 10 Join Date: Mar 2016 Device: iPad	Thank you for the quick answer. I found out that when I don't include mathjax it shows ok. But what if I need to include mathjax for other browsers/readers? Also, can I use the configuration part of mathjax to activate line breaking? Thx

03-16-2016, 08:18 AM	#5
ELITSIO Junior Member Posts: 9 Karma: 10 Join Date: Mar 2016 Device: iPad	I understand your opinion, but native mathml is also unstable and mathjax seems to show ok in ipad. I am trying to find a way to conditionally load mathjax in the configuration file. I know one can have different configurations for different browsers. But could it be set to not load/ignored if the reader is calibre? After many hours of experimenting with many readers, I found out that readium is pretty good but has a problem of not breaking math lines (I would appreciate if someone knows how to achieve it) and other readers have their own problems. (yes, I have set breaking lines in mathjax config) Calibre seems to show everything perfectly to me... when mathjax is not trying to load... thx Elias

03-16-2016, 08:53 AM	#6
kovidgoyal creator of calibre Posts: 45,299 Karma: 27111240 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Conditionally loading is trivial. Simply run a script that inserts a new script tag into the DOM and set the src of the script tag to point to mathjax. Use the epubReadingSystem object to detect reading systems.

04-01-2017, 01:35 AM	#7
knorris Member Posts: 16 Karma: 10 Join Date: Apr 2016 Device: kindle	I can't get maths equations to show correctly in the Editor Preview Panel but works fine in Calibre Viewer. Is there a simple remedy? Thanks

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