Inspired by this post, I tried to convert the MathML example, which looks like this:
<math>
<mrow>
<mfrac>
<mrow><mi>x</mi></mrow>
<mrow><mi>y</mi></mrow>
</mfrac>
</mrow>
</math>
to Latex using xsltproc. First I downloaded the XSLT files from here. Now, for those of use who don't speak MathML, the above example is a fraction: 1/2
After I've unzipped the xslt file and I created the MathML file (input.mml) I have the following files:
$ ls
README cmarkup.xsl entities.xsl glayout.xsl input.mml mmltex.xsl scripts.xsl tables.xsl tokens.xsl
So, when I do
$> xsltproc mmltex.xsl input.mml
x
y
Which is not correct, its not a Latex fraction. Any suggestions what I might be doing wrong here ?
Only getting the text content as the result of a transformation very often indicates that none of the templates in the stylesheet were applied. Then, buil-in templates step in and skip everything except for text nodes, which are sent to output.
Looking at the stylesheets you use, the stylesheets assume that the MathML input is in a namespace. For example, look at this template match I have taken from the mmmltext.xsl stylesheet:
match="m:math[not(@mode) or @mode='inline'][not(@display)] | m:math[@display='inline']">
As you can see, the elements are prefixed with m:, and, more interestingly, m: is declared as
xmlns:m="http://www.w3.org/1998/Math/MathML"
On the other hand, the input file you show is not in any namespace. Try the following input file:
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
<mfrac>
<mrow><mi>x</mi></mrow>
<mrow><mi>y</mi></mrow>
</mfrac>
</mrow>
</math>
In the XML document above, I have declared a default namespace on the math element. All of its child elements also take on this namespace.
Then, the output contains:
\frac{x}{y}
As the W3C page says:
Typical usage [of this namespace] would be:
<math xmlns="http://www.w3.org/1998/Math/MathML">