Larry Sulky wrote:
> Hi. I need to perform some subtraction on some variables. At first my
> XSLT 2.0 code looked like this:
> 
>         <xsl:variable name="bboxTokens" select="tokenize(@bbox,',')"/
>         <xsl:variable name="bboxWidth" select="$bboxTokens[3] -
> $bboxTokens[1]"/>
>         <xsl:variable name="bboxHeight" select="$bboxTokens[4] -
> $bboxTokens[2]"/>
> 
> 
> And the error was that the datatype didn't support the operator -
> (minus). So I added the as= attribute to declare the datatype:
> 
> 
>         <xsl:variable name="bboxTokens" as="decimal" select="tokenize
> (@bbox,',')"/>

tokenize gives you a sequence of strings, not a decimal. And the 
datatypes are in the W3C XML schema namespace so you need e.g.
   <xsl:stylesheet
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     version="2.0"
     xmlns:xs="http://www.w3.org/2001/XMLSchema">

     ...
     <xsl:variable name="bboxTokens" as="xs:string*" 
select="tokenize(@bbox, ',')"/>

>         <xsl:variable name="bboxWidth" as="decimal" select="$bboxTokens
> [3] - $bboxTokens[1]"/>

    <xsl:variable name="bboxWidth"
                  as="xs:decimal"
                  select="xs:decimal($bboxTokens[3]) - 
xs:decimal($bboxTokens[1])"/>




-- 

	Martin Honnen --- MVP XML
	http://msmvps.com/blogs/martin_honnen/