On Feb 19, 2008 8:13 PM, RJO <rjo@xxxxxxxxx> wrote:
> Hey guys,
>
> I have a form accepting a KML file from users and from there I want to
> draw polylines based on a KML file's
> <Placemarker><LineString><coordinates> element.
>
>
> The problem I am having is that sometimes the KML file can have a
> <document><folder> or <folder><document> or none of the above, or any
> number of random scenarios in the KML file making it hard to parse.
>
>
> To deal with this randomness I'm using an xpath and I think I have it
> right but it just wont work... the code:
> $result = $xml->xpath('Placemark/LineString/coordinates');
>
>
> An the particular XML file I am trying to pull from looks like:
> <?xml version="1.0" encoding="UTF-8"?>
> <kml xmlns="http://earth.google.com/kml/2.1";>
> <Document>
> <name>coehilltotweed.kml</name>
> <Style id="lineStyle">
> <LineStyle>
> <color>64eeee17</color>
> <width>6</width>
> </LineStyle>
> </Style>
> <Folder>
> <name>23-SEP-06</name>
> <Snippet maxLines="2">
> </Snippet>
> <description><![CDATA[<table>
> <tr><td><b>Distance</b> 139.0 mi </td></tr>
> <tr><td><b>Min Alt</b> 451.4 ft </td></tr>
> <tr><td><b>Max Alt</b> 1168.9 ft </td></tr>
> </table>]]></description>
> <Placemark>
> <name>Path</name>
> <styleUrl>#lineStyle</styleUrl>
> <LineString>
> <tessellate>1</tessellate>
> <coordinates>
> -77.827985,44.851878,311.109985
> -77.82702000000001,44.852114,313.993896
> -77.827213,44.85067600000001,313.513306
> -77.827792,44.850955,313.513306
> -77.830389,44.85333700000001,315.916504
> -77.833114,44.858379,317.358643
> -77.83193300000001,44.858508,313.993896 </coordinates>
> </LineString>
> </Placemark>
> </Folder>
> </Document>
> </kml>
>
> Any ideas why this won't work?
>
> Thanks!
>
>
It's the namespace. I'm not positive (I can't test on this computer)
but try this:
$result = $xml->xpath("*[local-name()='Placemark' and
namespace-uri()='http://earth.google.com/kml/2.1']/*[local-name()='LineString'
and namespace-uri()='http://earth.google.com/kml/2.1']/*[local-name()='coordinates'
and namespace-uri()='http://earth.google.com/kml/2.1']");
That may be a little off, but that's the idea, anyway.
Andrew
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