[NTG-context] Override MathML formula label
Hans Hagen
j.hagen at xs4all.nl
Sun Jul 28 22:04:48 CEST 2019
On 7/27/2019 8:23 AM, Duncan Hothersall wrote:
> Hi all.
>
> In processing MathML if I want a formula to be numbered I add a
> label="X" attribute to the <formula> tag as per:
>
> \usemodule[mathml]
> \starttext
> \xmlprocessdata{}{<formula label='X'>
> <math xmlns='http://www.w3.org/1998/Math/MathML'>
> <mi>p</mi><mo>=</mo><mi>c</mi><mo>-</mo><mi>t</mi>
> </math>
> </formula>}{}
> \stoptext
>
> This will label the formula as (1). I know I can adjust how the
> automatic numbering is generated using \setupformulae, but how can I
> override the label used for a specific formula, say to set it to (36A)?
> **
>
> Basically I have a setup where formulae are mostly numbered sequentially
> but occasionally individual formulae need to have an out-of-sequence or
> differently formatted number.
>
> Thanks as ever for any help.
\usemodule[mathml]
\startxmlsetups mml:formula
\edef\mmlformulalabel{\xmlatt{#1}{label}}
\edef\mmlformulatitle{\xmlatt{#1}{title}}
\doifsomethingelse {\mmlformulalabel\mmlformulatitle} {
\startplaceformula[reference=\mmlformulalabel,title=\mmlformulatitle]
\startformula
\xmlfirst{#1}{/mml:math}
\stopformula
\stopplaceformula
} {
\startformula
\xmlfirst{#1}{/mml:math}
\stopformula
}
\stopxmlsetups
\starttext
\xmlprocessdata {} {
<document>
<formula label='X'>
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<mi>p</mi><mo>=</mo><mi>c</mi><mo>-</mo><mi>t</mi>
</math>
</formula>
<formula label='Y' title="whatever">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<mi>p</mi><mo>=</mo><mi>c</mi><mo>-</mo><mi>t</mi>
</math>
</formula>
<formula label='Z'>
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<mi>p</mi><mo>=</mo><mi>c</mi><mo>-</mo><mi>t</mi>
</math>
</formula>
</document>
}{}
\stoptext
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
More information about the ntg-context
mailing list