RE: Calculation using the position of an element??

Hi,

> > Ive tried to come up with an XPath solution involving 
> position()  (one
> > line)  to produce a certain value using <xsl:value-of 
> select="......."/>
> >
> My Sample XML File
>
> > <tgroup cols = "5">
> >     <colspec colname="col1"/>
> >     <colspec colname="colspec1"/>
> >     <colspec colname="col2"/>
> >     <colspec colname="col4"/>
> > </tgroup>
> >
> > I have two different values (say x and y) elsewhere in the 
> xml doc and I
> > need to perform a small calculation that I will now outline in
> > Pseudocode...
> >
> > If x="colspec1" then
> >     position1 = 2
> > If y="col4" then
> >     position2 = 4
> > Result= position2 - position1
> >
> > ie Result=2
  <xsl:value-of select="count(colspec[(_at_)colname = 
$y]/preceding-sibling::colspec) - count(colspec[(_at_)colname = 
$x]/preceding-sibling::colspec)" /> 

Jarno

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