[xsl] ExtendedData from KML

[Alan Hale <alan.hale@xxxxxxxxxxx>]

Hi

I am attempting to convert a KML file to CSV using XSLT. I can succeed 
with most elements and attributes, along these lines:

   <xsl:template match="Folder">
        <xsl:for-each select="Placemark">
           <xsl:value-of select="@id" />,
           <xsl:value-of select="name" />,
           <xsl:value-of select="Point/coordinates" />,
           <xsl:value-of select="Snippet" />
           <br />
       </xsl:for-each>
   </xsl:template>

but I don't know how to deal with the ExtendedData section which has 
multiple <Data> elements identifed with individual attributes, e.g.:

<ExtendedData>
         <Data name="sciencName">
           <value>Acer campestre</value>
         </Data>
         <Data name="grid_ref">
           <value>SN593798</value>
         </Data>
         <Data name="eng_name">
           <value>Field Maple</value>
         </Data>
         <Data name="rdb_status">
           <value>Lower risk - least concern</value>
         </Data>
</ExtendedData>

Any advice much appreciated.

Thanks

Alan Hale
Aberystwyth