[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Calculate the average line length within variable
Thanks, that could be useful however now seems my problem is counting the number of lines accurately. I am trying to do a count of the number lines however perhaps this is not correct way to count the number of lines accurately in the lines variable <xsl:variable name="numberLines" select="count($lines)" as="xs:integer"/> I then do a check as follows before finding AvarageLineLength but still get the empty sequence problem. <xsl:when test="$numberLines ge 2"> <xsl:variable name="AvarageLineLength" select="round(avg($lines[last()]/preceding-sibling::node()/@length)) " as="xs:double"/> <xsl:choose> I tried the following as well with the same problem <xsl:variable name="numberLines" select="count($lines/@length)" as="xs:integer"/> On Mon, Apr 12, 2010 at 10:19 AM, David Carlisle <davidc@xxxxxxxxx> wrote: > 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 > > ________________________________________________________________________ > 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. > ________________________________________________________________________ > -- Alex https://sites.google.com/a/utg.edu.gm/alex Some Good Music http://sites.google.com/site/greigconteh/
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