Change row spacing

[hogskolep...@gmail.com]

Hi,

How can I change the spacing between rows in an equation? If i for example write

$$ x = y \\ z + 3 = 4 $$

I would like to increase the space between the rows. It is very thight especiallay when using \frac{}{} and ^.

Where can I find this variable or setting? I use TeX-AMS_HTML.js

Thanks!

[Peter Krautzberger]

Hi,

I'm not sure we have a setting to globally control line spacing (@dpvc, please correct me).

For local control (i.e., per equation), you can specify $$ \frac{x}{1} = y \\[20pt] z + 3 = 4 $$ or some such thing.

FWIW, this kind of linebreaking is a non-standard feature in MathJax's TeX input; a more standard approach would be to use an array environment such as align, e.g.,

\begin{align}

  x = y \\[20pt] 

  z + 3 = 4  

\end{align}

Regards,

Peter.

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[Davide P. Cervone]

> I'm not sure we have a setting to globally control line spacing (@dpvc, please correct me).

The interline spacing is controlled by the MathML "lineleading" line-breaking attribute, which could be set on the <mo> where the breaking is occurring (or via an <mstyle> or on the <math> element itself). From TeX, you don't have access to that value directly, but you could configure the default using something like

<script type="text/x-mathjax-config">
MathJax.Hub.Register.StartupHook("mml Jax Ready",function () {
MathJax.ElementJax.mml.math.prototype.defaults.lineleading = "20px";
});
</script>

before the script that loads MathJax.js itself in order to change the default line leading value. (It is "1ex" by default.)

Davide

[hogskolep...@gmail.com]

Thanks for a fast response! I added the code below to TeX-AMS_HTML.js and it worked! Great!