RE: Cannot get numeric value - what am I doing wrong?

An <xsl:variable> with content (rather than a select attribute) always
evaluates to a result tree fragment. If you want a number, do

<xsl:variable name="a">
  ... computation ...
</xsl:variable>

<xsl:variable name="b" select="number($a)"/>

Michael Kay 

# -----Original Message-----
# From: owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com 
# [mailto:owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com] On Behalf Of 
# Kyle Partridge
# Sent: 18 March 2004 21:45
# To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
# Subject: [xsl] Cannot get numeric value - what am I doing wrong?
# 
# Hi all,
# 
# This is probably an easy question for you to answer, but I'm stumped.
# 
# I've got this variable I'm trying to assign a NUMERIC value to:
# 
# <xsl:variable name="top-remove">
#       <xsl:choose>
#               <xsl:when test="string($prior-break-regions)">
#                       <xsl:call-template name="add-up">
#                               <xsl:with-param name="set-one"
# select="$prior-break-regions/@top"/>
#                               <xsl:with-param name="set-two"
# select="$prior-break-regions/@height"/>
#                       </xsl:call-template>
#               </xsl:when>
#               <xsl:otherwise><xsl:value-of
# select="number('0')"/></xsl:otherwise>
#       </xsl:choose>
# </xsl:variable>
# 
# It calls a template, "add-up" which takes two sets of number 
# node-sets and adds them all together.  This, too, is supposed 
# to return a NUMERIC
# value:
# 
# <xsl:template name="add-up">
#       <xsl:param name="set-one"/>
#       <xsl:param name="set-two"/>
#       <xsl:param name="index" select="1"/>
#       <xsl:param name="total" select="0"/>
#       <xsl:choose>
#               <xsl:when test="$index &gt; count($set-one) or 
# $index &gt; count($set-two)">
#                       <xsl:value-of select="number($total)"/>
#               </xsl:when>
#               <xsl:otherwise>
#                       <xsl:call-template name="add-up">
#                               <xsl:with-param name="set-one"
# select="$set-one"/>
#                               <xsl:with-param name="set-two"
# select="$set-two"/>
#                               <xsl:with-param name="total"
# select="$total + $set-one[$index] + $set-two[$index]"/>
#                               <xsl:with-param name="index"
# select="$index + 1"/>
#                       </xsl:call-template>
#               </xsl:otherwise>
#       </xsl:choose>
# </xsl:template>
# 
# So...HOW COME I wind up with a Node-Fragment type assigned to 
# my variable, when all is said and done???  I need the value 
# to be a numeric value, so that when I test to see if it is 
# boolean true or false, it will react properly.
# 
# Thanks,
# KP
# 
# 
#  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
# 
# 


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