Thanks Frank for your advice.<br>I identified that I was using old version of MS4W. So when I upgrade to MS4W 2.2.7, it works. At least, the errors I mentioned before didn't occurred anymore. But I have another problem: I only get a blank image, instead of a map. Can you suggest which things should I check for this error?<br>
<br><br><div class="gmail_quote">On Fri, Mar 14, 2008 at 1:47 AM, Frank Warmerdam <<a href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><br>
</div>Alexander,<br>
<br>
I believe GPX support was introduced into OGR in the 1.5.0 release, and<br>
it is only enabled for reading in builds that include the Expat XML parser.<br>
I would suggest you try it at the commandline with ogrinfo:<br>
<br>
ogrinfo -al test.gpx<br>
<br>
I'd add the error report does not seem to indicate any path, so there<br>
may be a path problem. You might want to try with a full path from<br>
the root, and see if that works.<br>
<br>
Best regards,<br>
<font color="#888888">--<br>
---------------------------------------+--------------------------------------<br>
I set the clouds in motion - turn up | Frank Warmerdam, <a href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a><br>
light and sound - activate the windows | <a href="http://pobox.com/%7Ewarmerdam" target="_blank">http://pobox.com/~warmerdam</a><br>
and watch the world go round - Rush | President OSGeo, <a href="http://osgeo.org" target="_blank">http://osgeo.org</a><br>
<br>
</font></blockquote></div><br>