The "creator" attribute is required and "extensions" is the correct
name of this element.
Validated with SAXCount from the xerces-c package:
$ SAXCount -v=always -n -s -f notes.gpx
Original error messages:
Error at file /home/markus/notes.gpx, line 2, char 171
Message: no declaration found for element 'gpx'
Error at file /home/markus/notes.gpx, line 2, char 171
Message: attribute 'version' is not declared for element 'gpx'
After adding the "xmlns" attribute:
Error at file /home/markus/notes.gpx, line 2, char 213
Message: missing required attribute 'creator'
Error at file /home/markus/notes.gpx, line 18, char 14
Message: no declaration found for element 'extension'
Error at file /home/markus/notes.gpx, line 26, char 7
Message: element 'extension' is not allowed for content model '(ele?,time?,magvar?,geoidheight?,name?,cmt?,desc?,src?,link*,sym?,type?,fix?,sat?,hdop?,vdop?,pdop?,ageofdgpsdata?,dgpsid?,extensions?)'
The current errors now are caused by the missing XML schema for the
extensions.
Also add the time, name and link elements.
Unfortunately the braindead RSS speciifcation requires author to
be an email address, so we have to use Dublin Core metadata to
report the author name instead.
Instead of storing the auto-generated meta information nearby_place
in the database, just look up the information on the fly when needed
and cache it for performance.
