Hi Rob,
This seems to work,
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0">
<xsl:output method="xml" indent="yes" />
<xsl:template match="/">
<kml xmlns="http://earth.google.com/kml/2.1";>
<Document>
<xsl:for-each select="station_list/snets/snet">
<xsl:variable name="idval" select="@id" />
<Folder id="{$idval}">
<name><xsl:value-of select="." /></name>
<xsl:for-each select="../../stations/station[Network = $idval]">
<Placemark>
<name><xsl:value-of select="@name" /></name>
</Placemark>
</xsl:for-each>
</Folder>
</xsl:for-each>
</Document>
</kml>
</xsl:template>
</xsl:stylesheet>
I think xsl:copy-of will not be required. A simple for-each iteration
would work.
On Sat, Jan 17, 2009 at 4:25 AM, Rob Newman <rlnewman(_at_)ucsd(_dot_)edu>
wrote:
Dear XSL gurus,
I have some XML in the following format:
INPUT XML
---------------
<station_list>
<snets>
<snet id="AZ">AZ (UC San Diego)</snet>
<snet id="BK">BK (UC Berkeley)</snet>
<snet id="CI">CI (CalTech)</snet>
<snet id="IU">IU GSN</snet>
<snet id="NN">NN (UN Reno)</snet>
<snet id="TA">TA (USArray)</snet>
<snet id="US">US ANSS</snet>
<snet id="UU">UUSS (Uni. Utah)</snet>
</snets>
<stations>
<station name="MONP">
<Network>AZ</Network>
</station>
<station name="BDM">
<Network>BK</Network>
</station>
<station name="FARB">
<Network>BK</Network>
</station>
<station name="109C">
<Network>TA</Network>
</station>
<station name="A05A">
<Network>TA</Network>
</station>
<station name="Z14A">
<Network>TA</Network>
</station>
<station name="US">
<Network>MSTX</Network>
</station>
..... [lots of <station> elements, over 600]....
</stations>
</station_list>
I want to group the output on the <snet> element id attribute value, moving
all matching <Network> stations into their respective <snet> group. Like the
following format:
DESIRED OUTPUT XML
-----------------------------
<kml xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns="http://earth.google.com/kml/2.1";>
<Document>
<Folder id="AZ">
<name>AZ (UC San Diego)</name>
<Placemark>
<name>MONP</name>
</Placemark>
</Folder>
<Folder id="BK">
<name>BK (UC Berkeley)</name>
<Placemark>
<name>BDM</name>
</Placemark>
<Placemark>
<name>FARB</name>
</Placemark>
</Folder>
<Folder id="TA">
<name>TA (USArray)</name>
<Placemark>
<name>109C</name>
</Placemark>
</Folder>
<Folder id="US">
<name>ANSS</name>
<Placemark>
<name>MSTX</name>
</Placemark>
</Folder>
</Document>
</kml>
Essentially I want to iterate through the document tree looking for each
<station> <Network> element, then relocating it into the different groups of
<snet>. The following XSLT works for generating the <Folder> elements, but
how do I match the <Network> element value and move them to the correct
<Folder> groups? I have read about <xsl:copy> and <xsl:copy-of>, but can't
seem to figure out how to write an expression that will work.
XSL
----
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0"
xmlns="http://earth.google.com/kml/2.1";
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema";>
<xsl:output method="xml" indent="yes"
cdata-section-elements="description" />
<xsl:template match="/">
<kml>
<Document>
<xsl:for-each select="station_list/snets/snet">
<Folder id="{(_at_)id}">
<name><xsl:value-of select="."
/></name>
</Folder>
<!-- Some sort of xsl:copy-of select
expression to get the matching <station> <Network> values? -->
<!-- Guessing here -->
<xsl:apply-templates
select="station_list/stations/station/" />
</xsl:for-each>
</Document>
</kml>
</xsl:template>
<xsl:template match="station_list/stations/station/">
<Placemark>
<name><xsl:value-of select="@name" /></name>
</Placemark>
</xsl:template>
</xsl:stylesheet>
Any help appreciated! I hope I have explained this clearly. I know this is
probably a newbie question, so please bear with me - I only occasionally
dabble in XSL.
Thanks in advance,
- Rob
--
Regards,
Mukul Gandhi
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