Re: [xsl] GPX to XML?

[Michael Kay <mike@xxxxxxxxxxxx>]

If you're using XSLT 2.0, add

xpath-default-namespace="http://www.topografix.com/GPX/1/1";

to the xsl:stylesheet element.

If you're using 1.0, add a namespace declaration

xmlns:gpx="http://www.topografix.com/GPX/1/1";

and then prefix all unprefixed names in your XPath expressions and match
patterns (throughout the styesheet) with "gpx:".

Michael Kay
Saxonica

On 6 Mar 2014, at 16:44, Roger Price <rp272@xxxxxxxxx> wrote:

>
>
> From: Roger Price
> Sent: Thursday, March 06, 2014 4:18 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: GPX to XML?
>
> I have not touched XSLT since I retired. However I wish to convert some GPX
files to a different XML format for my sat nav. I remember how picky XSLT can
be...
>
> Here is a simplified GPX source file:
>
> <gpx xmlns="http://www.topografix.com/GPX/1/1";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; creator="komoot gpx
writer" version="1.1"
> xsi:schemaLocation="http://www.topografix.com/GPX/1/1
http://www.topografix.com/GPX/1/1/gpx.xsd";>
> <metadata>
> <name>Tour</name>
> <desc/>
>   <link href="http://www.komoot.de";>
>     <text>komoot homepage</text>
>     <type>text/html</type>
>   </link>
> </metadata>
> <trk>
> <name>Tour</name>
>   <trkseg>
>     <trkpt lat="50.749345" lon="-2.3432386">
>       <ele>53.85803985595703</ele>
>       <time>2014-03-03T22:10:21Z</time>
>     </trkpt>
>     <trkpt lat="50.7494596" lon="-2.3445584">
>       <ele>54.950225830078125</ele>
>       <time>2014-03-03T22:10:45Z</time>
>     </trkpt>
>     <trkpt lat="50.7494921" lon="-2.3439906">
>       <ele>53.61299514770508</ele>
>       <time>2014-03-03T22:10:32Z</time>
>     </trkpt>
>    </trkseg>
>  </trk>
> </gpx>
>
>
>
> XSLT file:
>
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
>  <xsl:output method="xml" indent="yes"/>
>      <xsl:template match="/">
>          <routing_points>
>             <default_set>
>                <xsl:for-each select="gpx/trk/trkseg/trkpt">
>                   <xsl:choose>
>                      <xsl:when test="position() =1">
>                      <xsl:element name="departure">
>                            <lon><xsl:value-of
select="floor(@lon*3600000)"/></lon>
>                            <lat><xsl:value-of
select="floor(@lat*3600000)"/></lat>
>                         </xsl:element>
>                     </xsl:when>
>                     <xsl:when test="position() = last()">
>                      <xsl:element name="destination">
>                               <lon><xsl:value-of
select="floor(@lon*3600000)"/></lon>
>                              <lat><xsl:value-of
select="floor(@lat*3600000)"/></lat>
>                       </xsl:element>
>                   </xsl:when>
>                   <xsl:otherwise>
>                      <xsl:element name="waypoint">
>                            <lon><xsl:value-of
select="floor(@lon*3600000)"/></lon>
>                           <lat><xsl:value-of
select="floor(@lat*3600000)"/></lat>
>                    </xsl:element>
>                  </xsl:otherwise>
>                </xsl:choose>
>             </xsl:for-each>
>          </default_set>
>      </routing_points>
>  </xsl:template>
> </xsl:stylesheet>
>
>
>
>
>
>
>
> Result:
>
> <routing_points>
>           <default_set/>
> </routing_points>
>
> However if I remove: xmlns="http://www.topografix.com/GPX/1/1"; from the
<gpx> node I get what I need:
>
> Modified Result:
>
> <routing_points>
>           <default_set>
>                       <departure>
>                                   <lon>-8438367</lon>
>                                   <lat>182698171</lat>
>                       </departure>
>                       <waypoint>
>                                   <lon>-8440411</lon>
>                                   <lat>182698054</lat>
>                       </waypoint>
>                       <destination>
>                                   <lon>-8440584</lon>
>                                   <lat>182697029</lat>
>                       </destination>
>           </default_set>
> </routing_points>
>
>
>
> I feel that editing a source file first is a bit like cheating. Please can
anyone suggest what I should do?