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On 12/04/2010 11:00, Alex Muir wrote:
<xsl:variable name="averageLineLength" 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 ________________________________________________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. ________________________________________________________________________
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