Re: xsl:function, arithmetic

  <xsl:function name="my:increase">
      <xsl:param name="i" />
      <xsl:value-of select="round(1.2 * $i)" />
  </xsl:function>
  but all the expressions in my
  stylesheet which use this function seem to return non-numerical results.


value-of generates a text node with the string value of the number

probably something like

<xsl:function name="my:increase" as="xs:decimal">
    <xsl:param name="i"  as="xs:decimal"/>
    <xsl:sequence select="round(1.2 * $i)" />
</xsl:function>

would return something that is a number for use in further xpath
computation. (untested)



David

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