3
$\begingroup$

I do not see how to remove <annotation encoding='Mathematica' from generated MathML. Afaict it is not needed for a one way conversion and it often doubles the size of generated MathML.

How to do this quickly?

Shouldn't "Annotations"->{} option handle this?

(mathml = ExportString[Column@List@f[x], "MathML", "Annotations" -> {}]) // AbsoluteTiming // Column 
0.0025588 <math xmlns='http://www.w3.org/1998/Math/MathML'> <semantics> .... <annotation encoding='Mathematica'>TagBox[...</annotation> (*THIS is a waste of space for me*) </semantics> </math>

I can mathml->XMLElement->DeleteCase->ExportString but then the procedure takes +500% of time for something that could've been just dropped before.

mathml // ImportString[#, "XMLElement"] & // DeleteCases[#, XMLElement["annotation", ___], \[Infinity]] & // ExportString[#, "XML"] & // AbsoluteTiming // Column 
0.0108532 <math xmlns='http://www.w3.org/1998/Math/MathML'> <semantics> ... </semantics> </math>
Improve this question
$\endgroup$
3
  • $\begingroup$ Back to working on M2MD? $\endgroup$ Commented Jul 21, 2020 at 6:59
  • $\begingroup$ @Szabolcs yes a little but this question originated completely independently. :) $\endgroup$ Commented Jul 21, 2020 at 7:01
  • $\begingroup$ There are the Presentation and Content options. Naively, I would have thought that this falls under "content" and therefore should not be generated at all with "Content"->False (the default). I might be mistaken. but this is definitely not something to be displayed ... $\endgroup$ Commented Jul 21, 2020 at 7:08

1 Answer 1

Reset to default
3
$\begingroup$

Trace reveals that XML`MathML`BoxesToSymbolicMathML is used under the hood and it has an "IncludeMarkupAnnotations" option which seems to do the job:

ExportString[Column@List@f[x], "MathML", "IncludeMarkupAnnotations" -> False] 
<math xmlns='http://www.w3.org/1998/Math/MathML'> <mtable> <mtr> <mtd> <mrow> <mi>f</mi> <mo>&#8289;</mo> <mo>(</mo> <mi>x</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </math>
Improve this answer
$\endgroup$
2
  • 2
    $\begingroup$ This option is documented in XML/tutorial/MathML. (I find it by searching IncludeMarkupAnnotations in the document, strangely the page is not linked to ref/format/MathML. ) $\endgroup$ Commented Jul 21, 2020 at 7:34
  • $\begingroup$ @xzczd thanks. {format}+F1 is my goto when I convert something so I expected it there. $\endgroup$ Commented Jul 21, 2020 at 7:36

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.