On 12/04/2010 11:00, Alex Muir wrote:
<xsl:variable name="averageLineLength"
select="round(avg($lines[last()]/preceding-sibling::node()/@length))"
as="xs:double"/>
you have used an as attribute that says this mmust return one value but
if $lines has less than two items
$lines[last()]/preceding-sibling::node()
will be empty, so avg() will get an empty sequence, and so return () so
you fail the type check.
perhaps
select="(round(avg($lines[last()]/preceding-sibling::node()/@length)),0)[1]"
woul dbe what you want, returning 0 if there are no lines to average.
David
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