I am using Xalan and XSLT 1.0 for the following
since xalan supports exslt:node-set I'd use that which will allow you to
use sum() on the numbers you have already generated.
<top>
<xsl:variable name="x">
what you have..
</xsl:variable>
<xsl:copy-of select="$x"/>
<sumOfAGroup>
<xsl:for-each
select="exslt:node-set($x)/top/sumsForEachElementByKeyMultipliedByPosition">
<sum><xsl:value-of select="sum(element)"/></sum>
</sumOfAGroup>
</xsl:for-each>
</top>
David
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