Re: [xsl] grouping questions

[Mukul Gandhi <mukul_gandhi@xxxxxxxxx>]

Hi Xiang,
Please try this XSL -
(this is a Muenchian Grouping solution)

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

<xsl:output method="text"/>
	
<xsl:key name="by-row" match="row"
use="concat(length,' ',Axis)" />
	
<xsl:template match="/root">
   <xsl:for-each select="Record/row[generate-id(.) =
generate-id(key('by-row', concat(length,'
',Axis))[1])]">
     Experiment (length=<xsl:value-of select="length"
/>,Axis=<xsl:value-of select="Axis"
/>)<xsl:text>&#xA;</xsl:text>
     <xsl:for-each select="key('by-row',
concat(length,' ',Axis))">
        <xsl:for-each select="*[(name() != 'length')
and (name() != 'Axis')]">
           <xsl:value-of select="name()"
/>=<xsl:value-of select="." />
             <xsl:if test="position() !=
last()">,</xsl:if>
	</xsl:for-each>
	<xsl:text>&#xA;</xsl:text>	        
     </xsl:for-each>
   </xsl:for-each>
</xsl:template>
	
</xsl:stylesheet>

I added a <root> tag at the begining to make the XML
well formed.

Hope I understood the problem correctly..

Regards,
Mukul

--- Xiang Li <lix@xxxxxxx> wrote:

> Hi, 
> 
> I have some problems in restructuring some data
> files. what i have to do is
> to group the measurements(<length>) of "a" and "c"
> (<Axis>) together, so i
> need to find what are the other tags in each row,
> and read their values to
> decide which ones belong to the same experiment. 
> 
> my xml file looks like this:
> 
> <Record sample="1">
>    <row row_id='0'>
>       <length>5.4</length>
>       <Axis>a</Axis>
>       <Environment>air</Environment>
>       <Temperature>200K</Temperature>
>    </row>
>    <row row_id='1'>
>       <length>5.3</length>
>       <Axis>c</Axis>
>       <Environment>air</Environment>
>       <Temperature>200K</Temperature>
>    </row>
>    <row row_id='2'>
>       <length>5.0</length>
>       <Axis>a</Axis>
>       <Environment>air</Environment>
>       <Temperature>400K</Temperature>
>    </row>
>    <row row_id='3'>
>       <length>5.4</length>
>       <Axis>c</Axis>
>       <Environment>air</Environment>
>       <Temperature>400K</Temperature>
>    </row>
>    <row row_id='4'>
>       <length>5.4</length>
>       <Axis>a</Axis>
>       <Environment>Ar</Environment>
>       <Temperature>200K</Temperature>
>    </row>
>    <row row_id='5'>
>       <length>5.4</length>
>       <Axis>c</Axis>
>       <Environment>Ar</Environment>
>       <Temperature>200K</Temperature>
>    </row>
> </Record>
> <Record sample="2">
> 	...
> </Record>
> 
> Problem is, tags other than <length> and <Axis> vary
> from sample to sample.
> this seems like impossible for me to do the grouping
> using xslt. Maybe some
> gurus here can give me your brilliant ideas?...
> thanks!!
> 
> Xiang



		
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