RE: Counting uniquely selected values of elements

See <http://jenitennison.com/xslt/grouping>

<xsl:key name="uniq" match="a/b/c" use="." />

<xsl:template match="root">
<xsl:for-each select="a/b/c[generate-id(.) = generate-id(key('uniq', .))]">
<xsl:value-of select="."/> occurs <xsl:value-of select="count(key('uniq', .))"/> times. <xsl:text/>
</xsl:for-each>
</xsl:template>

Cheers,

Jarno - neuroticfish: wakemeup! (club-edit)