I'm still learning. How can I sum a set of numbers? Part of my xsl follows (I am building a table of items and dollar amounts and then want a total at the bottom:
<xsl:template match="File/Detail">

<tr>
<td align="center">
Billing<br/>Provider
</td>
<td align="center">
Total Claim<br/>Count
</td>
<td align="center">
Total Billed<br/>Amount
</td>
<td align="center">
Total Allowed<br/>Amount
</td>
<td align="center">
Total Denied<br/>Amount
</td>
<td align="center">
Total Paid<br/>Amount
</td>
</tr>



<xsl:for-each select="BillingProvider">
<tr>
<td>
  <xsl:value-of select="TS3/TS301"></xsl:value-of>
</td>
<td align="right">
  <xsl:value-of select="TS3/TS304"></xsl:value-of>
</td>
<td align="right">
  <xsl:text>$</xsl:text>
  <xsl:value-of select="format-number(TS3/TS305,'#,###.00')"></xsl:value-of>
</td>
<td align="right">
  <xsl:text>$</xsl:text>
  <xsl:value-of select="format-number(TS3/TS306,'#,###.00')"></xsl:value-of>
</td>
<td align="right">
  <xsl:text>$</xsl:text>
  <xsl:value-of select="format-number(TS3/TS308,'#,###.00')"></xsl:value-of>
</td>
<td align="right">
  <xsl:text>$</xsl:text>
  <xsl:value-of select="format-number(TS3/TS309,'#,###.00')"></xsl:value-of>
</td>
</tr>
</xsl:for-each>





<tr>
<td colspan="6">
  <xsl:for-each select="BillingProvider">
    <xsl:value-of select="sum(TS3/TS309)"/>
  </xsl:for-each>
</td>
</tr>

</xsl:template>

I have searched this forum and so far cannot find an example for this. Other sum examples I found elsewhere were overly complicated and I failed to grasp what was going on. What is the best way to sum up a list on numbers found in specific nodes? Note that "BillingProvider" is a child element found in several places in the overall xml file. And as I said, I can pull each of those values in fine.

P.S. Thanks Michael for your prior help and I have now your book on order!

You haven't shown your source data, which make it difficult to help.

If the numbers are contained as element or attribute values, you can simply do sum(NODESET) where NODESET is an expression that selects the relevant nodes.

If you need to compute the numbers (which includes something as simple as stripping a "$" sign off), it's a bit more complicated. Let's say that EXP($n) is the expression that computes the number for a given node $n.

In XPath 2.0 you can simply do

sum(for $n in NODESET return EXP($n))

In 1.0 you have a choice:

(a) a two pass solution where the first pass creates a tree in which the numbers appear as element or attribute values

(b) a recursive named template

(c) a library routine from EXSLT or FXSL

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Sorry for not including the source. Here is part of it, reduced (big file). I am working with xpath 1.0.

<Detail>
<BillingProvider>
    <LX>
        <LX01>1</LX01>
    </LX>
    <TS3>
        <TS301>105590000</TS301>
        <TS302>11</TS302>
        <TS303>20041231</TS303>
        <TS304>933</TS304>
        <TS305>162166.96</TS305>
        <TS306>146255.44</TS306>
        <TS307>-82178.49</TS307>
        <TS308>15911.52</TS308>
        <TS309>146255.44</TS309>
    </TS3>
    <ClaimLineItem>
        <CLP>
            <CLP01>21830/TEN002</CLP01>
            <CLP02>1</CLP02>
            <CLP03>119.84</CLP03>
            <CLP04>119.84</CLP04>
            <CLP05/>
            <CLP06>MC</CLP06>
            <CLP07>992006039047695001</CLP07>
            <CLP08>12</CLP08>
            <CLP09>3</CLP09>
        </CLP>
        <DTM>
            <DTM01>232</DTM01>
            <DTM02>20060116</DTM02>
        </DTM>
        <DTM>
            <DTM01>233</DTM01>
            <DTM02>20060119</DTM02>
        </DTM>
        <SVC>
            <SVC01>HC:XX</SVC01>
            <SVC02>119.84</SVC02>
            <SVC03>119.84</SVC03>
            <SVC04/>
            <SVC05>16</SVC05>
        </SVC>
        <DTM>
            <DTM01>150</DTM01>
            <DTM02>20060116</DTM02>
        </DTM>
        <DTM>
            <DTM01>151</DTM01>
            <DTM02>20060119</DTM02>
        </DTM>
    </ClaimLineItem>
    <ClaimLineItem>
        <CLP>
    ...etc many ClaimLineItems

    then....

    </ClaimLineItem>
</BillingProvider>
<BillingProvider>
    <LX>
        <LX01>2</LX01>
    </LX>
    <TS3>
        <TS301>105590200</TS301>
        <TS302>11</TS302>
        <TS303>20041231</TS303>
        <TS304>361</TS304>
        <TS305>87696.11</TS305>
        <TS306>78049.33</TS306>
        <TS307>-81341.63</TS307>
        <TS308>8809.92</TS308>
        <TS309>78049.33</TS309>
    </TS3>
    <ClaimLineItem>
            <CLP>
            <CLP01>XXX</CLP01>
            <CLP02>1</CLP02>
            <CLP03>39</CLP03>
            <CLP04>39</CLP04>
            <CLP05/>
            <CLP06>MC</CLP06>
            <CLP07>992006039038540001</CLP07>
            <CLP08>12</CLP08>
            <CLP09>1</CLP09>
        </CLP>
            ...etc

Hope this part of the source helps.

This code:

 <xsl:for-each select="BillingProvider">
    <xsl:value-of select="sum(TS3/TS309)"/>
  </xsl:for-each>

looks fine if you want one total for each BillingProvider (though the totals will all be squidged up against each other).

If you want a total across all the BillingProviders, just do

<xsl:value-of select="sum(BillingProvider/TS3/TS309)"/>

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Wow. Too simple. Works perfectly! Thanks, Michael!