# Equations do not appear on Slicer wiki pages

**URL:** <https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343>\
**Category:** Support\
**Tags:** web-infrastructure\
**Created:** [May 19, 2017, 1:46am UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343 "2017-05-19T01:46:42Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 19, 2017, 1:46am UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/1 "2017-05-19T01:46:42Z")

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Question moved here from [mailing list](http://slicer-devel.65872.n3.nabble.com/wiki-troubles-td4038511.html):

Hey guys,

I wanted to point of of my students to the coordinate systems wiki page and it is in a pretty bad shape.  
Anyone aware of this?

[https://www.slicer.org/wiki/Coordinate\_systems](https://www.slicer.org/wiki/Coordinate_systems)

I also attach a screenshot.

Thanks,  
Attila

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 19, 2017, 2:02am UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/2 "2017-05-19T02:02:22Z")

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Submitted a bug report: [http://na-mic.org/Mantis/view.php?id=4374](http://na-mic.org/Mantis/view.php?id=4374)

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**Author:** ![mhalle](https://avatars.discourse-cdn.com/v4/letter/m/50afbb/32.png) [@mhalle](https://discourse.slicer.org/u/mhalle)\
**Post date:** [May 19, 2017, 2:19am UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/3 "2017-05-19T02:19:37Z")

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Looks like [https://formulasearchengine.com/](https://formulasearchengine.com/) , which the wiki module uses for math formatting, is busted. At this point, I can’t find any information about the site or its status. If anyone has any insight or workaround, I can pass it onto our maintainer.

–Mike

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [May 19, 2017, 11:32am UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/4 "2017-05-19T11:32:55Z")

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Probably there’s a newer way to embed latex in mediawiki pages. Yes, it  
would be great if Greg could look into it.

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [May 19, 2017, 5:44pm UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/5 "2017-05-19T17:44:28Z")

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While [https://formulasearchengine.com/](https://formulasearchengine.com/) does not work, the url:

[http://api.formulasearchengine.com/v1/](http://api.formulasearchengine.com/v1/)

seems to be valid.

Also for production server, it is recommended to use our own mathoid server. See [https://www.mediawiki.org/wiki/Extension:Math](https://www.mediawiki.org/wiki/Extension:Math)

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**Author:** ![mhalle](https://avatars.discourse-cdn.com/v4/letter/m/50afbb/32.png) [@mhalle](https://discourse.slicer.org/u/mhalle)\
**Post date:** [May 19, 2017, 7:10pm UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/6 "2017-05-19T19:10:24Z")

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When I tested it yesterday I don’t think the HTTP endpoint wasn’t working, so maybe they’re working on things or moving them around.

At any rate, there are often problems running HTTP services on SSL-secured pages, so even if it work it wouldn’t be ideal.

Running our own server for just this? Ugh.

–Mike

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [May 19, 2017, 7:45pm UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/7 "2017-05-19T19:45:30Z")

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By the way, no server is really needed -  
[http://manuels.github.io/texlive.js/](http://manuels.github.io/texlive.js/)

But whatever is easiest to install and maintain. There are other pages on  
the na-mic wiki with equations and it would be good to have modern  
supported mediawiki solution.

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [May 22, 2017, 1:43pm UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/8 "2017-05-22T13:43:55Z")

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> [@pieper](#):
>
> By the way, no server is really needed -  
> [http://manuels.github.io/texlive.js/](http://manuels.github.io/texlive.js/)

Looks neat, but still require some work to be integrated.

Instead, I would suggest to look into [https://www.mathjax.org/](https://www.mathjax.org/)

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [May 22, 2017, 2:43pm UTC](https://discourse.slicer.org/t/equations-do-not-appear-on-slicer-wiki-pages/343/9 "2017-05-22T14:43:49Z")

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We should probably let Greg advise us on the best solution for mediawiki integration.

[https://www.mediawiki.org/wiki/Extension:Math#MathJax](https://www.mediawiki.org/wiki/Extension:Math#MathJax)