You may have noticed there is another thread running on the same subject -
how to sum over values that are computed from those held in the nodes,
rather than the actual string-values of the nodes. The solutions on offer
include:

(a) create a temporary tree containing nodes holding the values directly,
then sum over the nodes in that temporary tree

(b) a recursive named template

(c) the f:map function in FXSL

(d) the saxon:sum() extension function in Saxon 6.5.3

(e) In XSLT 2.0, sum(for $x in $nodes return number(tokenize($x, ' ')))

(f) In Schema-aware XSLT 2.0, if the type of your gml:Pos nodes is list of
numbers, then the sum() function will do the job directly.

Michael Kay
http://www.saxonica.com/ 
  

> -----Original Message-----
> From: Andreas Schnabl [mailto:Oandie@xxxxxxx] 
> Sent: 29 May 2005 11:36
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  sum function
> 
> Hi there,
> 
> I am trying to sum some coordinates, afterwards I want to 
> format them and
> display the issue. What I need is to summarize the first 
> coordinates with
> the leading 3 and then the second with the leading 5. 
> I tried the following but it didn't work out. It seems that 
> the processor
> don't use the "substring-before"- elment, cause if I change it into
> "substring- after I got the same display...
> Here comes the code so far: 
> 
> 
> <xsl:template name="x">
> <xsl:variable name="x_sum"
> select="sum(xplan:Position/gml:Polygon/gml:exterior/gml:Linear
> Ring/gml:Pos[substring-before(.,'
> ')])"/>
> <xsl:variable name="x_count"
> select="count(xplan:Position/gml:Polygon/gml:exterior/gml:Line
> arRing/gml:Pos)"/>
> <xsl:variable name="x_format" select="format-number($x_sum, '#')"/>"
> <xsl:variable name="x_rw" select="3400000"/>
> <xsl:variable name="x_ges" select="$x_rw*$x_count"/>
> <xsl:variable name="x_ges1" select="$x_format - $x_ges"/>
> <xsl:variable name="x_ges2" select="$x_ges1 div $x_count"/>
> <xsl:value-of select="$x_sum"/>
> 
> </xsl:template>
> 
> 
> The source looks like this:
> 
> Code:
> 
> (...)
> <gml:Pos>3480252.383 5889479.27</gml:Pos>
> <gml:Pos>3480289.585 5889464.571</gml:Pos>
> (...)
> 
> 
> I changed the position of "substring" in the XPath expression 
> like this:
> 
>  
> 
> <xsl:variable name="x_sum"
> select="sum(substring-before(xplan:Position/gml:Polygon/gml:ex
> terior/gml:LinearRing/gml:Pos,'
> '))"/>
> 
>  
> 
> But then I got only the first value.
> What I need is both of the values inside the gml:Pos element, 
> but apart from
> each other. In the first step I would count all the values which a are
> before the blank and in the second the values after the blank 
> and sum them
> up as well. 
> I need to get the balance point of the values.
> 
>  
> I don't know if it depends maybe on the XSLT- processor I 
> need. I am working
> with XMLSpy, 2005 professinal edition and I use the built in 
> processor.
>  
> 
> cheers
> 
> andy
> 
> 
> -- 
> --------------------------------------------
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> Andreas Schnabl
> Geibelstrasse 2a
> 76185 Karlsruhe
> Tel.:0721- 4903793
> Mob.: 0170-1590394
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