I am looking for ways to convert Loran C data to Lat Lon for my GPS.
Any help greatly appreciated.

On 11 Jul 2009, at 2:59pm, Tony wrote:

> I am looking for ways to convert Loran C data to Lat Lon for my GPS.
> Any help greatly appreciated.

LORAN uses Time Difference expressions.  Unless you have local data
for the conditions around your points your precision will be low.
Conversion from one to another isn't a simple matter of a few
equations.  You should take a look at

http://www.flfish.com/gps_index/loran_gps.htm

and

http://www.uscg.mil/hq/cg9/rdc/default.asp?page=misc/posaid.asp&rn=off

Note that your GPS unit probably uses WGS 84, which is the same as NAS
83.

Simon.

Hello,

Does anyone know a free software for converting gpx file into a 3d curve? Or
another way to use the data to generate a curve? Like maybe convert it to AI or
EPS formats, which would be understood by the 3d application as connected
points, essentially a curve in 3d space.

Thanks!

I am a auto repossessor. Many of my customers are asking for a system that
tracks used cars for them. I am familiar with the components but can't find the
software that runs the website. Most of the suppliers that will talk to me take
all the profit out with their pricing. I need help to know where to look next.

On 24 Jul 2009, at 2:41am, twhite139@... wrote:

> I am a auto repossessor. Many of my customers are asking for a
> system that tracks used cars for them. I am familiar with the
> components but can't find the software that runs the website. Most
> of the suppliers that will talk to me take all the profit out with
> their pricing. I need help to know where to look next.

Systems like this don't sell the tracking software to clients unless
they are very big (thousands of vehicles) clients.  You generally
subscribe to a service which does the monitoring for you, and allows
you to track your cars by looking them up on a web site.  Running the
web site is part of the service the vendor supplies: they don't sell
you the software you just use a web browser to connect to their server.

If your clients really do have thousands of cars (or if you have
enough customers put together) then it's time to hire a programmer and
have your own software written.

Simon.

Dear all

I have a free camping (australia) site where people can upload their favourite
camping spots and it is displayed on Google Maps.

This is all stored in a MySQL database and uses PHP and XML to feed the Google
map.

What I was wondering if there was already a script/example of how to get info
out of the MySQL database using PHP and display it in .gpx xml format?

I can write this myself but why reinvent the wheel?

Thanks
Brett

My site if anyone interested:
http://www.ozcamps.net/index.php?option=com_wrapper&view=wrapper&Itemid=29

The GDAL/OGR library is a good place to start for any format
conversion work. See
http://gdal.org/ogr/drv_gpx.html for the GPX page. There are no PHP
bindings but I think you can accomplish your work using the ogr2ogr
command line utility:
http://gdal.org/ogr2ogr.html

Hal

Brett Kinross wrote:
>
>
> Dear all
>
> I have a free camping (australia) site where people can upload their
> favourite camping spots and it is displayed on Google Maps.
>
> This is all stored in a MySQL database and uses PHP and XML to feed the
> Google map.
>
> What I was wondering if there was already a script/example of how to get
> info out of the MySQL database using PHP and display it in .gpx xml format?
>
> I can write this myself but why reinvent the wheel?

I do a similar thing where users can upload coordinates for reptiles /
amphibians and then retrieve their record(s) as either GPX or KML.

Since both GPX and KML are xml based, I use the DOMDocument class in php
(requires php 5.2.x or newer) to create the files. Eventually I will be
writing a generic class but for now, here's example of how I make GPX.

$coords represents a result row of the sql query (fetched as an object).

-=-
$myxml = new DOMDocument("1.0","UTF-8");
$myxml->preserveWhiteSpace = false;
$myxml->formatOutput   = true;
$mygpx = $myxml->createElement("gpx");
$mygpx->setAttribute("version","1.0");
$mygpx->setAttribute("creator","ShastaHerps.org -
http://www.shastaherps.org - php-xml DOMDocument");

$mygpx->setAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
$mygpx->setAttribute("xmlns","http://www.topografix.com/GPX/1/0");

$mygpx->setAttribute("xsi:schemaLocation","http://www.topografix.com/GPX/1/0
http://www.topografix.com/GPX/1/0/gpx.xsd");
-=-

At that point - I now have a gpx node I can add waypoints to -

-=-
$mywpt = $myxml->createElement("wpt");
$rndlat=(0 + $coords->lat);
$rndlon=(0 + $coords->lon);
$rndele=(0 + $coords->elev);
$mywpt->setAttribute("lat",$rndlat);
$mywpt->setAttribute("lon",$rndlon);
$myele = $myxml->createElement("ele",$rndele);
-=-

I remove trailing 0's from from lat, lon, elevation for aesthetics.
lon and lat are added as attributes to the new $mywpt node, elevation is
created as a new node that will be appended to $mywpt node later

-=-
$rctime = $coords->rec_date . " " . $coords->rec_time;

$myTime = strtotime($rctime);
$utc_datetime = date('c',$myTime);
$mytime = $myxml->createElement("time",$utc_datetime);
-=-

That produces time in local time with GMT offset, making it easier to
read but still conforms to GPX time specification. Time is an optional node.

Other child nodes are created using the standard DOMDocument method -
then I add all the child nodes to the $mywpt node:

-=-
$mywpt->appendChild($myele);
$mywpt->appendChild($mytime);
$mywpt->appendChild($myname);
$mywpt->appendChild($mycmt);
$mywpt->appendChild($mydesc);
$mywpt->appendChild($myurl);
$mywpt->appendChild($myurlname);
$mywpt->appendChild($mysym);
-=-

The $mywpt note is then added as a child to the $mygpx node:

$mygpx->appendChild($mywpt);

other waypoints are then created if necessary and finally when all
waypoints have been appended to $mygpx node:

-=-
$myxml->appendChild($mygpx);
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);
header('Content-type: application/xml');
header("Content-Disposition: attachment; filename=RecordSHS-" . $record
. ".gpx");
header("Content-Transfer-Encoding: binary");
print $myxml->saveXML();
-=-

Works very well for me.

KML generation is a bit more complicated because it involves generation
of styles to use with Placemarks and html fragments that I include with
the record (see the example kml file at
http://www.shastaherps.org/About#gpxkml) but is also created in a
similar fashion.

Hope this helps.
If you want the actual php files I use, e-mail me off list and I'll send
them, but you'll need of course need to modify them as I don't yet do it
as a class.

>
> KML generation is a bit more complicated because it involves generation
> of styles to use with Placemarks and html fragments that I include with
> the record (see the example kml file at

A bit OT, but see http://code.google.com/p/libkml/ for easing the burden of
generating and parsing KML.


[Non-text portions of this message have been removed]

Robert Lipe wrote:
>
>
>  >
>  > KML generation is a bit more complicated because it involves generation
>  > of styles to use with Placemarks and html fragments that I include with
>  > the record (see the example kml file at
>
> A bit OT, but see http://code.google.com/p/libkml/
> <http://code.google.com/p/libkml/> for easing the burden of
> generating and parsing KML.

They don't have php bindings. It isn't too hard to do with DOMDocument -
the only major difference is I create separate DOMDocument instances for
the html fragments used in the KML records and save it to a string for
inclusion in the KML file (in a DOMDocument created cdata section).

--- In gpsxml@yahoogroups.com, "Michael A. Peters" <mpeters@...>
Thanks Michael

Will give it a go. I only need to store Title, Lat, Long so should be fairly
easy.

Cheers

My software reports an error when a user tries to open a
non-validating GPX file.  I'm starting to see error reports for files
with creator="Endura", which I assume were created by Lowrance' new
Endura GPS receivers.  Unfortunately, nobody has emailed me an actual
file to test with, so the error message below is all I have:

Invalid XML:...<endura:waypoint>...XML Error 0xC00CE01D on line 14, position 18
Reason: Reference to undeclared namespace prefix: 'endura'.

Perhaps Robert Lipe or someone else in the group is seeing similar
user reports?

BTW, I'm also seeing damaged GPX files coming from Garmin nuvis,
usually with garbage data in <rte><name>xxxxxxxx</name> where xx is
0x00 or other weird binary data.

If you do have Waypoints.gpx from an Endura, I'd appreciate a copy
emailed to me at support@...  I believe replies to this
mailing list will have email attachments stripped out.

On Wed, Aug 12, 2009 at 10:42 AM, Dan Foster <egroups@...> wrote:

> My software reports an error when a user tries to open a
> non-validating GPX file.  I'm starting to see error reports for files
> with creator="Endura", which I assume were created by Lowrance' new
> Endura GPS receivers.  Unfortunately, nobody has emailed me an actual
> file to test with, so the error message below is all I have:
>
> Invalid XML:...<endura:waypoint>...XML Error 0xC00CE01D on line 14,
> position 18
> Reason: Reference to undeclared namespace prefix: 'endura'.
>
> Perhaps Robert Lipe or someone else in the group is seeing similar
> user reports?
>

I've not heard anything about them in GPSBabelsville.  Though we support the
.usr format, I don't hear a huge amount about Lowrance at all, actually.

There is a user or two of the Endura line  that have a thread running in the
Groundspeak forums.   As I know you hang out there sometime, I'd suggest
posting a request on

http://forums.groundspeak.com/GC/index.php?showtopic=227830

I have it on good authority that the forum moderator there would consider
such a request for files or reasonable discussions of compatibility issues
to be pertinent. :-)

But what you're describing seems pretty straightforward.  They're using a
ns: prefix without a declaration of a xmlns= in the header, right? That's
bad XML.



> BTW, I'm also seeing damaged GPX files coming from Garmin nuvis,
> usually with garbage data in <rte><name>xxxxxxxx</name> where xx is
> 0x00 or other weird binary data.
>

I hear way more about Nuvi than I do Endura (heaven knows there are more of
them) and I've not seen this one, but I've long suspected that my users tend
to write more to Nuvis than read from them.

I'd definitely send that (along with model number and firmware version) to
Garmin support/engineering.

FWIW, there was a high profile publisher of GPX files a year ago that kept
publishing files with "naughty" characters in them like this.    While that
bug has been fixed, this snippet remains and explains how I reflected the
pressure back to the publisher to fix it:

                                                 if ( val < 32 ) {
                                                         warning( MYNAME ":
Ignoring illegal character %s;\n\tConsider emailing %s at <%s>\n\tabout
illegal characters in their GPX files.\n", badchar,
gpx_author?gpx_author:"(unknown author)", gpx_email?gpx_email:"(unknown
email address)" );
                                                         memmove( badchar,
semi+1, strlen(semi+1)+1 );



The "X" in "GPX" only works if we all write GPX that's actually well
formed.   It's great that GPS devices are supporting it "natively", but they
have to play by the rules to get the benefits of interoperability.

RJL


[Non-text portions of this message have been removed]

On 12 Aug 2009, at 4:42pm, Dan Foster wrote:

> BTW, I'm also seeing damaged GPX files coming from Garmin nuvis,
> usually with garbage data in <rte><name>xxxxxxxx</name> where xx is
> 0x00 or other weird binary data.

I anyone else is seeing these, I'd appreciate a copy, especially if
you can also provide exactly which model (not just 'nüvi 5xx' but
'nüvi 540 T') produced the bad file.  If it's available, it would also
be useful to know where that 'name' came from: was it entered via the
GPS unit's interface, or was it auto-generated, or was it the result
of importing something from a computer.

Simon.

Hi,
I want to record photo information in a GPX file probably as an extension to
wptType.
Primarily I want to record the lat/long of the photo but ideally I'd like to
include
* Comments/Description
* Tilt of Camera
* Direction of Camera
* ..
Is there an extension around I can reuse(I can't find one)? If not should there
be one? Does anyone have any thoughts on what info should be captured?
Thanks in advance for your input
David Hayes

PS: I'm building a cell phone application for recording a hike (for example)
along with photos etc for exporting to a GPX or KML file

On 14 Sep 2009, at 10:28pm, davidhayesuk wrote:

> Hi,
> I want to record photo information in a GPX file probably as an
> extension to wptType.
> Primarily I want to record the lat/long of the photo but ideally I'd
> like to include
> * Comments/Description
> * Tilt of Camera
> * Direction of Camera
> * ..
> Is there an extension around I can reuse(I can't find one)? If not
> should there be one?

I don't know of one, but a photography professional helped me pick the
fields mentioned here:

http://www.hearsay.demon.co.uk/geoloc/index.html

as useful for photography.  Longitude and Latitude are already in GPX,
of course.

Don't forget to take a look at the documentation for the EXIF fields
too: they're the opposite: they allow GPS information to encoded
inside a photograph.  But which fields they chose to define might help
you decide which fields you want to define.

Simon.

During some time coordinates (lat, lon) aren't changed, ie object was stopped.
What is the best way to write this data if I don't intend to write all the
points but then reading gpx I can determine coordinate at every moment
accurately?
Thanks.

On 19 Sep 2009, at 3:10pm, kirill.polishchuk wrote:

> During some time coordinates (lat, lon) aren't changed, ie object
> was stopped.
> What is the best way to write this data if I don't intend to write
> all the points but then reading gpx I can determine coordinate at
> every moment accurately?

You need to write at least the first point and the last point.

Simon.

I currently use Garmin RoadTrip or BaseCamp to capture waypoints and
tracks from an Oregon 550t. In addition to the application identifier
that Garmin includes in the GPX file, I would like to have the device
providing the information identified.
Does GPX support inclusion of that information? Would it be done through
the extension mechanism in the metadata?
If anyone can point me to existing extensions providing that
information, I would be grateful.


[Non-text portions of this message have been removed]

On 27 Sep 2009, at 2:58pm, wallywedel wrote:

> I currently use Garmin RoadTrip or BaseCamp to capture waypoints and
> tracks from an Oregon 550t. In addition to the application identifier
> that Garmin includes in the GPX file, I would like to have the device
> providing the information identified.

How precisely do you want the device identified ?  A make and model ?
Or a specific unit ?  Do you want to distinguish between different
firmware versions ?

Do you distinguish between points the device obtained as its current
GPS coordinates and points entered by the user scrolling around and
clicking on the display ?  Because arguably the latter kind of points
were provided by the human, not the device but the Favourites list
doesn't distinguish between them.

How do you cope with information provided from multiple sources ?

> Does GPX support inclusion of that information?

No.

> Would it be done through
> the extension mechanism in the metadata?

Yes.  But you don't have enough access to your Garmin Oregon to make /
it/ provide that information, only Garmin can do that.  You'd have to
add it later using software on your computer.  Or switch to a platform
such as the iPhone or Android where you can write your own software.

> If anyone can point me to existing extensions providing that
> information, I would be grateful.

I don't know of any, but that doesn't mean much.

Simon.

You raise some interesting questions.

Since I posted that inquiry, I have discovered that the Oregons in
mass storage mode generate a file called GarminDevice.xml on the
device itself in the Garmin folder. Since this file is accessible to
me, I copied it and investigated it. It conforms to a Garmin schema
named GarminDevicev2.xsd. I found this schema in the RoadTrip
application bundle. The schema contains much more information than I
need including the essentials of device name, serial number, and
software version.

Your multiple sources question was one that I wanted to answer since I
wanted to compare an Oregon 400t to an Oregon 550t. Within both
RoadTrip and BaseCamp you can mix and match from different sources. I
expect that the device information has to go into the waypoint or
track elements as an extension. I am going to experiment with the
schemas and see if the device information can be added in conformant
manner.
--
Wally Wedel


On Sep 27, 2009, at 10:08 AM, Simon Slavin wrote:

>
> On 27 Sep 2009, at 2:58pm, wallywedel wrote:
>
> > I currently use Garmin RoadTrip or BaseCamp to capture waypoints and
> > tracks from an Oregon 550t. In addition to the application
> identifier
> > that Garmin includes in the GPX file, I would like to have the
> device
> > providing the information identified.
>
> How precisely do you want the device identified ? A make and model ?
> Or a specific unit ? Do you want to distinguish between different
> firmware versions ?
>
> Do you distinguish between points the device obtained as its current
> GPS coordinates and points entered by the user scrolling around and
> clicking on the display ? Because arguably the latter kind of points
> were provided by the human, not the device but the Favourites list
> doesn't distinguish between them.
>
> How do you cope with information provided from multiple sources ?
>
> > Does GPX support inclusion of that information?
>
> No.
>
> > Would it be done through
> > the extension mechanism in the metadata?
>
> Yes. But you don't have enough access to your Garmin Oregon to make /
> it/ provide that information, only Garmin can do that. You'd have to
> add it later using software on your computer. Or switch to a platform
> such as the iPhone or Android where you can write your own software.
>
> > If anyone can point me to existing extensions providing that
> > information, I would be grateful.
>
> I don't know of any, but that doesn't mean much.
>
> Simon.
>



[Non-text portions of this message have been removed]

Hello,

Sunday, September 27, 2009, 9:58:32 AM, wallywedel wrote:

>
> I currently use Garmin RoadTrip or BaseCamp to capture waypoints and
> tracks from an Oregon 550t. In addition to the application identifier
> that Garmin includes in the GPX file, I would like to have the device
> providing the information identified.
> Does GPX support inclusion of that information? Would it be done through
> the extension mechanism in the metadata?
> If anyone can point me to existing extensions providing that
> information, I would be grateful.

There's nothing to stop you from changing the text in the creator
attribute from "Garmin BaseCamp" to "Garmin BaseCamp Oregon 550t" or
"Wally Wedel, using a Garmin Oregon 550t with cleanup in Garmin
BaseCamp"



--
Dan Foster

Right, I understand that.

After further consideration and investigation, though, I am proceeding with
inserting device information into extension elements in the gpx files. SInce
Garmin has defined device extensions, it seems like using them is the way to go.

--- In gpsxml@yahoogroups.com, Dan Foster <egroups@...> wrote:
>
> Hello,
>
> Sunday, September 27, 2009, 9:58:32 AM, wallywedel wrote:
>
> >
> > I currently use Garmin RoadTrip or BaseCamp to capture waypoints and
> > tracks from an Oregon 550t. In addition to the application identifier
> > that Garmin includes in the GPX file, I would like to have the device
> > providing the information identified.
> > Does GPX support inclusion of that information? Would it be done through
> > the extension mechanism in the metadata?
> > If anyone can point me to existing extensions providing that
> > information, I would be grateful.
>
> There's nothing to stop you from changing the text in the creator
> attribute from "Garmin BaseCamp" to "Garmin BaseCamp Oregon 550t" or
> "Wally Wedel, using a Garmin Oregon 550t with cleanup in Garmin
> BaseCamp"
>
>
>
> --
> Dan Foster
>

Hi,

I intend to use the GPX 1.1 standard for a project I'm doing in aid of my
Master's Thesis. I see that the release date is August 9, 2004. Since it is the
result of open development who or what should I credit as author/owner? My
bibliography wants to know.

Thanks
Ken

I have an etrex vista HCX and was trying to do the same, but I can't
find any xml file on the micro SD card I have inserted in the device.
I do see my gpx files but nothing more.
Do you know if there is another way to identify the device without using
the serial interface from Garmin?
I have searched the web, but haven't found any information,
Many thanks in advance.
- Philippe

   ----- Original Message -----
   From: "Dan Foster"
   To: wallywedel
   Subject: Re: [gpsxml] Device information in GPX files
   Date: Tue, 29 Sep 2009 12:47:42 -0400


   Hello,

   Sunday, September 27, 2009, 9:58:32 AM, wallywedel wrote:

   >
   > I currently use Garmin RoadTrip or BaseCamp to capture waypoints
   and
   > tracks from an Oregon 550t. In addition to the application
   identifier
   > that Garmin includes in the GPX file, I would like to have the
   device
   > providing the information identified.
   > Does GPX support inclusion of that information? Would it be done
   through
   > the extension mechanism in the metadata?
   > If anyone can point me to existing extensions providing that
   > information, I would be grateful.

   There's nothing to stop you from changing the text in the creator
   attribute from "Garmin BaseCamp" to "Garmin BaseCamp Oregon 550t" or
   "Wally Wedel, using a Garmin Oregon 550t with cleanup in Garmin
   BaseCamp"



   --
   Dan Foster



   ------------------------------------

   Yahoo! Groups Links




[Non-text portions of this message have been removed]

Since the etrex is older, it may not support the same things that the Oregon
series does. When the Oregon mounts on my system, I see 2 USB mass storage
devices. One is labelled "Garmin" and the other "Garmin4G". Garmin4G is the SD
card and only holds my additional maps. Garmin is the built-in device memory and
that is where the configuration files appear. The Oregon when it mounts reports
that it is generating these files.

HTH

--- In gpsxml@yahoogroups.com, "Philippe Bettler" <pbettler@...> wrote:
>
>  I have an etrex vista HCX and was trying to do the same, but I can't
> find any xml file on the micro SD card I have inserted in the device.
> I do see my gpx files but nothing more.
> Do you know if there is another way to identify the device without using
> the serial interface from Garmin?
> I have searched the web, but haven't found any information,
> Many thanks in advance.
> - Philippe
>
>   ----- Original Message -----
>   From: "Dan Foster"
>   To: wallywedel
>   Subject: Re: [gpsxml] Device information in GPX files
>   Date: Tue, 29 Sep 2009 12:47:42 -0400
>
>
>   Hello,
>
>   Sunday, September 27, 2009, 9:58:32 AM, wallywedel wrote:
>
>   >
>   > I currently use Garmin RoadTrip or BaseCamp to capture waypoints
>   and
>   > tracks from an Oregon 550t. In addition to the application
>   identifier
>   > that Garmin includes in the GPX file, I would like to have the
>   device
>   > providing the information identified.
>   > Does GPX support inclusion of that information? Would it be done
>   through
>   > the extension mechanism in the metadata?
>   > If anyone can point me to existing extensions providing that
>   > information, I would be grateful.
>
>   There's nothing to stop you from changing the text in the creator
>   attribute from "Garmin BaseCamp" to "Garmin BaseCamp Oregon 550t" or
>   "Wally Wedel, using a Garmin Oregon 550t with cleanup in Garmin
>   BaseCamp"
>
>
>
>   --
>   Dan Foster
>
>
>
>   ------------------------------------
>
>   Yahoo! Groups Links
>
>
>
>
> [Non-text portions of this message have been removed]
>

Garmin's USB protocol returns the unit ID and serial number of those devices
over the USB or serial lines.  There is no device.xml on the Garmins that
don't really speak GPX natively/fluently such as the whole eTrex line and
and the 60/76 families.

On Tue, Sep 29, 2009 at 1:40 PM, Philippe Bettler <pbettler@...>wrote:

>  I have an etrex vista HCX and was trying to do the same, but I can't
> find any xml file on the micro SD card I have inserted in the device.
> I do see my gpx files but nothing more.
> Do you know if there is another way to identify the device without using
> the serial interface from Garmin?
> I have searched the web, but haven't found any information,
> Many thanks in advance.
> - Philippe
>
>  ----- Original Message -----
>  From: "Dan Foster"
>  To: wallywedel
>  Subject: Re: [gpsxml] Device information in GPX files
>  Date: Tue, 29 Sep 2009 12:47:42 -0400
>
>
>  Hello,
>
>  Sunday, September 27, 2009, 9:58:32 AM, wallywedel wrote:
>
>  >
>  > I currently use Garmin RoadTrip or BaseCamp to capture waypoints
>  and
>  > tracks from an Oregon 550t. In addition to the application
>  identifier
>  > that Garmin includes in the GPX file, I would like to have the
>  device
>  > providing the information identified.
>  > Does GPX support inclusion of that information? Would it be done
>  through
>  > the extension mechanism in the metadata?
>  > If anyone can point me to existing extensions providing that
>  > information, I would be grateful.
>
>  There's nothing to stop you from changing the text in the creator
>  attribute from "Garmin BaseCamp" to "Garmin BaseCamp Oregon 550t" or
>  "Wally Wedel, using a Garmin Oregon 550t with cleanup in Garmin
>  BaseCamp"
>
>
>
>  --
>  Dan Foster
>
>
>
>  ------------------------------------
>
>  Yahoo! Groups Links
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


[Non-text portions of this message have been removed]

Hello Ken,

Wednesday, October 7, 2009, 12:50:38 AM, Keyork wrote:

> I intend to use the GPX 1.1 standard for a project I'm doing in aid
> of my Master's Thesis. I see that the release date is August 9,
> 2004. Since it is the result of open development who or what should
> I credit as author/owner? My bibliography wants to know.

All contributions to the GPX standard were made through this
discussion forum.  My wife, an editor, suggests that you cite the
author as GPX Developers Forum, or simply omit the author (ask your
advisor what he wants to see).  If you include a URL, I'd suggest
http://www.topografix.com/gpx, since that leads to the best
information about the GPX standard.  Or link to the GPX 1.1 schema, at
http://www.topografix.com/GPX/1/1/gpx.xsd.  The direct link to the
GPX Developers Forum is http://groups.yahoo.com/group/gpsxml

--
Dan Foster

'Location-Based' Services in a mobile environment survey

You are being invited to take part in a research study. The aim of this research
is to investigate the extent to which users are aware of 'location-based'
recommendation services and their perception of such services. The research will
ultimately proceed to propose new methods that overcome (or at least reduce)
identified problems.

http://www.schilke.net/survey/

Keywords: mobile internet, location based services, recommendation,
personalization


Please disseminate this announcement to any relevant lists and among your
colleagues/students.

On 15 Nov 2009, at 6:47am, swschilke wrote:

> 'Location-Based' Services in a mobile environment survey
>
> You are being invited to take part in a research study. The aim of this
research is to investigate the extent to which users are aware of
'location-based' recommendation services and their perception of such services.

Wait ... you are asking the members of a group that's all about mapping whether
they're aware of location-based services ?  Did you lose some IQ points since
you were at Plymouth, Steffen ?

> Please disseminate this announcement to any relevant lists and among your
colleagues/students.

What part of 'unsolicited bulk email' do you not understand ?

Simon.