pelican-plugins/render_math

Math Render Plugin For Pelican

This plugin gives pelican the ability to render mathematics. It accomplishes this by using the MathJax javascript engine.

The plugin also ensures that Typogrify and recognized math "play" nicely together, by ensuring Typogrify does not alter math content. It requires at a minimum Pelican version 3.5 and Typogrify version 2.0.7 to work. If these versions are not available, Typogrify will be disabled for the entire site.

Both Markdown and reStructuredText is supported.

Installation

To enable, ensure that render_math plugin is accessible. Then add the following to settings.py:

PLUGINS = ["render_math"]

Your site is now capable of rendering math math using the mathjax JavaScript engine. No alterations to the template is needed, just use and enjoy!

Typogrify

In the past, using Typgogrify would alter the math contents resulting in math that could not be rendered by MathJax. The only option was to ensure that Typogrify was disabled in the settings.

The problem has been recitified in this plugin, but it requires Typogrify version 2.0.7 (or higher) and Pelican version 3.5 or higher. If these versions are not present, the plugin will disable Typogrify for the entire site

Usage

Templates

No alteration is needed to a template for this plugin to work. Just install the plugin and start writing your Math.

Settings

Certain MathJax rendering options can be set. These options are in a dictionary variable called MATH_JAX in the pelican settings file.

The dictionary can be set with the following keys:

• align: controls how displayed math will be aligned. Can be set to either left, right or center. Default Value: center.
• indent: if align not set to center, then this controls the indent level. Default Value: 0em.
• show_menu: a boolean value that controls whether the mathjax contextual menu is shown. Default Value: True
• process_escapes: a boolean value that controls whether mathjax processes escape sequences. Default Value: True
• latex_preview: controls the preview message users are seen while mathjax is rendering LaTex. If set to Tex, then the TeX code is used as the preview (which will be visible until it is processed by MathJax). Default Value: Tex
• color: controls the color of the mathjax rendered font. Default Value: black

For example, in settings.py, the following would make math render in blue and displaymath align to the left:

MATH_JAX = {'color':'blue','align':left}

Resulting HTML

Inlined math is wrapped in span tags, while displayed math is wrapped in div tags. These tags will have a class attribute that is set to math which can be used by template designers to alter the display of the math.

Markdown

This plugin implements a custom extension for markdown resulting in math being a "first class citizen" for Pelican.

###Inlined Math Math between $..$, for example, $x^2$, will be rendered inline with respect to the current html block. Note: To use inline math, there must not be any whitespace before the ending $. So for example:

• Relevant inline math: $e=mc^2$
• Will not render as inline math: $40 vs $50

###Displayed Math Math between $$..$$, for example, $$x^2$$, will be rendered centered in a new paragraph.

###Latex Macros Latex macros are supported, and are automatically treated like displayed math (i.e. it is wrapped in div tag). For example, begin{equation} x^2 \end{equation}, will be rendered in its own block with a right justified equation number at the top of the block. This equation number can be referenced in the document. To do this, use a label inside of the equation format and then refer to that label using ref. For example: begin{equation} \label{eq} X^2 \end{equation}. Now refer to that equation number by $\ref{eq}$.

reStructuredText

If there is math detected in reStructuredText document, the plugin will automatically set the math_output configuration setting to MathJax.

###Inlined Math Inlined math needs to use the math role:

The area of a circle is :math:`A_\text{c} = (\pi/4) d^2`.

###Displayed Math Displayed math uses the math block:

.. math::

  α_t(i) = P(O_1, O_2, … O_t, q_t = S_i λ)