Hi Dennis,
thank you for looking at it. But I'm looking for a BNF or other form of
derivation rules or any kind of informal specification.
The exported MathML is known to have structural deficits, for example 'a
+ 2 b' will result in
<mrow>
<mi>a</mi>
<mo stretchy="false">+</mo>
<mn>2</mn>
</mrow>
<mi>b</mi>
which is a structure '{a+2} b',
where it should be a structure 'a + {2 b}'.
It is a long-term task (in which I'm interested) to get a better
representation of the formulas in MathML and so be able to drop
StarMath. And therefore I'm looking for some developer information about
StarMath. If such does not exist, the way through examining code and
examples will be harder.
Kind regards
Regina
Dennis E. Hamilton schrieb:
I have an incomplete result. You may have already explored this.
First, saving an AOO Formula (.odf) as a StarMath 5.0 Formula (.smf) does not
seem to be exported. There is no import for it either.
You can still save as an OpenDocument.org .sxm formula or an ODF Formula
(.odf). They are nearly identical.
Both .sxm and .odf are Zip Packages and nearly identical. In particular, the
content.xml is a MathML formula that has a StarMath 5.0 formula as an
annotation. It is exactly the same formula that you end up editing in the
lower window of the Apache OpenOffice Math (or LibreOffice Math) application.
So the upper window shows the MathML rendering, and the lower window shows the
StarMath 5.0! And the content.xml carries both.
In effect, the Elements Tool and the hand editing that you do is creating
StarMath that is then displayed via MathML in the upper, graphical-formula
window.
That doesn't provide the StarMath grammar except by example, but it is a way to
build them experimentally and see.
Finally, this led me to the Help Topic "Math formula editor" and click the Formulas link to get to
"Welcome to the OpenOffice Math Help" page. The subtopic "Formula Reference Tables" seems to be
the key. The color function is under "Attributes".
StarMath uses {...} for precedence/grouping control in the same manner as TeX
and LaTeX formulas.
We can probably figure out the grammar by making examples of all the operators
and other oddities.
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