for
<?xml version="1.0"?>
<rows>
 <row>
  <total>1</total>
 </row>
 <row>
  <total>2</total>
 </row>
 <row>
  <total>3</total>
 </row>
 <row>
  <total>4</total>
 </row>
</rows>

try the following
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:template match="rows">
  <!--1
3
6
10
-->
  <xsl:variable name="total-rows" select="count(row)"/>
  <xsl:call-template name="print-sum">
   <xsl:with-param name="initial" select="0"/>
   <xsl:with-param name="counter" select="1"/>
   <xsl:with-param name="total-rows" select="$total-rows"/>
  </xsl:call-template>
 </xsl:template>
 <xsl:template name="print-sum">
  <xsl:param name="initial"/>
  <xsl:param name="counter"/>
  <xsl:param name="total-rows"/>
  <xsl:if test="$counter &lt;=$total-rows">
   <xsl:variable name="row-val" select="row[position()=$counter]/total"/>
   <xsl:variable name="sum" select="$initial+$row-val"/>
   <xsl:value-of select="$sum"/>
   <br/>
   <xsl:call-template name="print-sum">
    <xsl:with-param name="initial" select="$sum"/>
    <xsl:with-param name="counter" select="$counter+1"/>
    <xsl:with-param name="total-rows" select="$total-rows"/>
   </xsl:call-template>
  </xsl:if>
 </xsl:template>
</xsl:stylesheet>

Untested..
HTH
Vasu
----- Original Message ----- 
From: "Jaime Stuardo" <jstuardo@xxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, July 07, 2004 4:33 PM
Subject:  using preceding-sibling to calculate acummulated amount


Hi all...

I need to show in HTML a column of a table that shows the acummulated
quantity... If, for example, I have:

<row>
  <total>1</total>
</row>
<row>
  <total>2</total>
</row>
<row>
  <total>3</total>
</row>
<row>
  <total>4</total>
</row>

I want to show in HTML:

1
3
6
10

I tried:
total + preceding-sibling::total

but it didn't work.

Thanks
Jaime

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