preceding...please help understanding...

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Subject: preceding...please help understanding...
From: "Bill Carter" <bcarter2003@xxxxxxxxxxx>
Date: Sat, 07 Sep 2002 12:34:22 -0500

Hi,

I am having trouble understanding preceding.

My simple xml:

<stocks>
  <ticker>AAA</ticker>
  <ticker>ABT</ticker>
  <ticker>BIG</ticker>
  <ticker>CBS</ticker>
  <ticker>CBS</ticker>
  <ticker>IBM</ticker>
  <ticker>XYZ</ticker>
</stocks>

I want to display an html table with all the tickers in rows except for
ones that are the same as the previous one (in this case CBS repeats)

here is my xsl snippet to try to accomplish this:

<table width="100%" border="1" cellspacing="0" cellpadding="0"> <xsl:for-each select="stocks/ticker"> <xsl:if test=". != preceding::ticker"> <tr> <td><xsl:value-of select="." />: Pos:<xsl:value-of select="position()" /></td> </tr> </xsl:if> </xsl:for-each> </table>

Here is what I wanted:

AAA: Pos:1
ABT: Pos:2
BIG: Pos:3
CBS: Pos:4
IBM: Pos:6
XYZ: Pos:7

Here is what I got (what happend to AAA and why is CBS: Position 5 showing?):

ABT: Pos:2
BIG: Pos:3
CBS: Pos:4
CBS: Pos:5
IBM: Pos:6
XYZ: Pos:7

not right... So now I try to change the if line to:

<xsl:if test=". = preceding::ticker"> so what I think I am saying is that if the ticker is the same as the preceding one show it's name but no others.

here is my xsl snippet now (I am displaying the position now):

<table width="100%" border="1" cellspacing="0" cellpadding="0"> <xsl:for-each select="stocks/ticker"> <xsl:if test=". = preceding::ticker"> <tr> <td><xsl:value-of select="." />: Pos:<xsl:value-of select="position()" /></td> </tr> </xsl:if> </xsl:for-each> </table>

Here is my output:

CBS: Pos:5

exactly what I expected. the fifth ticker is CBS and it is the same as the forth ticker (CBS), so it shows it.

Why doesn't the previous one work as expected. What am I missing here about preceding?

thanks,

will

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Current Thread
preceding...please help understanding... Bill Carter - Sat, 7 Sep 2002 13:33:13 -0400 (EDT) <= J.Pietschmann - Sat, 7 Sep 2002 13:56:39 -0400 (EDT) Mike Brown - Sat, 7 Sep 2002 14:11:31 -0400 (EDT)

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RE: copy single node once fro, Michael Kay	Thread	Re: preceding...please help u, J.Pietschmann
Re: copy single node once fro, Thomas Olausson	Date	Re: preceding...please help u, J.Pietschmann
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