RE: 'interleaved' numbering

Hi,

mmmmm tricky.

First its bad form to post attachments, normally a snippet of data and
what's require is enough :)

Anyway, the problem you have is that <theorem> exist within <subSect>,
therefore <xsl:number> is no good.  Also, counting
preceding-sibling::theorem's is no good as you want only those that are
in the current <section>.

So I would recommend creating a variable with the values you need, and
then referencing that variable when you need the number.  So as a
top-level-element (child of the root) you would want a variable like:

<xsl:variable name="theorems-rtf">
  <xsl:for-each select="//section">
    <xsl:for-each select="//theorem">
      <theorem id="{generate-id()}" number="{position()}"/>
    </xsl:for-each>
  </xsl:for-each>
</xsl:variable>

This variable will create a result-tree-fragment that has elements that
look like:
  
<theorem id="aBcD" number="1"/>

The @number will hold the position of the theorem within each <section>
(therefore the number you want).

So, to perform operations on the r-t-f, you need to convert it to a
node-set:

<xsl:variable name="theorems" select="saxon:node-set($theorems-rtf)"/>

Now whenever you need to generate the number the theorem, you can
generate the first part using <xsl:number> in the normal way, and then
use your nice variable to get the final number:

<xsl:template match="theorem">
  <xsl:variable name="id" select="generate-id()"/>
  <xsl:value-of select="@name"/>
  <xsl:number level="multiple" format="1.1." count="section"/>
  <xsl:for-each select="$theorems">
    <xsl:value-of select="theorem[@id=$id]/@number"/>
  </xsl:for-each>
</xsl:template>

This works by comparing the generated-id() of the current <theorem> with
that held in the variable (generate-id() will always produce that same
result when applied to the same node) to get the @number.


If any of these needs explaining further, please post again.

cheers
andrew 


> -----Original Message-----
> From: jody@xxxxxxxxxxxx [mailto:jody@xxxxxxxxxxxx]
> Sent: 21 August 2002 15:22
> To: Andrew Welch
> Subject: RE:  'interleaved' numbering
> 
> 
> Hi andrew
> thanks for your reply
> >
> > wayhay, xsl:number my favourite element ;)
> >
> > wont simply leaving out <subsection> from the count 
> attribute give you
> > what you need?
> >
> > <xsl:number level="multiple" format="1.1.1"
> > count="block|chapter|section|theorem"/>
> Sorry, this didn't work
> 
> Attached to this mail you'll find
>   BMMM.xsd      Schema for my xml data (probably not needed)
>   Test.xml      my dummy sample xml file
>   BMMM_html.xsl the culprit
> 
> Test.xml contains 1 block, 1 chapter and 2 sections
> The first section contains 2 subsections,
> The second section contains 1 subsection.
> There are 2 theorems in the first section, one in each subsection,
> and one theorem in the second section.
> 
> 
> What i want, is that the theorems in the first section are numbered
> 1.1 and 1.2
> and the theorem in the secon section should be numbered
> 2.1
> 
> Currently, they are all numbered 1.1  :(
> 
> I have tried all sorts of leaving out bits from the count attribute,
> but none has given me the desired output.
> 
> I am using the saxon XSLT processor (http://saxon.sourceforge.net/)
> to transform my xml - do you think that might be the problem?
> Would you suggest that i use an other processor?
> 
> Thanks
>   jody
> 
> 
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