... insist on the GPX including timestamps for all trackpoints. ... The rationale for their preference would be best asked of them. We could speculate that...
... I am a contributor of a very large number of tracks to OSM and always use GPX 1.1. There is a however a requirement for timestamps for all trackpoints....
... Hello, I have the same problem. I am currently writing a GPS software that will generate GPX files, but I don't know if the <ele> files should contain the...
Hello, ... There was discussion of this around August 4, 2003 - you can use the Yahoo Groups web archive to read these old messages. Dan Foster wrote: [gpsxml]...
... Hello Dan, Thanks for your answer. To summarize the result of the 2003 discussion : ele = height above mean sea level (geoid) h = height above WGS84...
... I wouldn't worry too much about what garmin uses - I can walk 5 feet on a fairly mild slope and see the elevetion jump 100 feet. I've even seen it jump...
... I went kayaking on Lake Ontario on Saturday, and my Garmin Forerunner said that I'd climbed 83 feet and descended 81 feet. I don't think Lake Ontario...
... Not even close. I only did 5 miles out and back. That's why the 83 foot elevation change is so ridiculous. -- "You didn't need to. You sold ours." - Jon...
On Tue, Apr 7, 2009 at 7:04 PM, Simon Slavin ... I think I can state pretty confidently that 99% of GPS users care more about altitude MSL (above Mean Sea...
The geoid is bumpy and wrinkly all over. The ellipsoid is mathematically trivial, in absolute and as compared to the geoid. Could Garmin really have a model of...
Yes, Garmin has a model of the geoid in their firmware. Its resolution is another matter. The NMEA $GPGGA sentence gives the altitude above mean sea level and...
Yes, Garmin has a model of the geoid in their firmware. Its resolution is another matter. The NMEA $GPGGA sentence gives the altitude above mean sea level and...
... Can we test it empirically ? Find some place on earth where the various (four ?) values of 'elevation' are clearly different, some GPS units there, and...
... When I first got my garmin, the elevation at Lake Shasta was pretty close to the published elevation above sea level. But it jumped around - so it wasn't...
... 1. The value in the GPGGA sentence is the altitude above mean sea level by the NMEA specification; otherwise, a company is in violation (I'm not saying...
On Fri, Apr 10, 2009 at 2:58 PM, Simon Slavin ... It's too bad my WAAS-capable Garmin 296 got stolen. The elevation on a WAAS GPS is much more reliable than...
... Very interesting. Does everyone agree that it's most reasonable for a GPS unit to calculate and log height-above-geoid ? Or does that strike anyone as...
... It is most reasonable for them to report the elevation most useful to the consumers who purchased the unit. I suspect for most people that is elevation...
... But don't forget that the GPS system gives the height above the WGS84 ellipsoïd. To be able to provide the height above MSL to the user, the GPS units...
In the schema, several items have a minOccurs=0 w/ no maxOccurs defined. Is maxOccurs to be interpreted as 1 or unbounded? We'd like to be able to define...
... Technically, this would indicate that you can have as many as you like. If you as suspicious about how this might apply to the item you're looking at,...
The schema element in question is: <xsd:element name="sym" type="xsd:string" minOccurs="0"> <xsd:annotation> <xsd:documentation> Text of GPS symbol name. For...
Hello, ... http://www.topografix.com/GPX/1/1/gpx.xsd If you look at other element definitions in the GPX schema, you'll see that elements that can be repeated...
I'm getting an unexpected run-time error: "Unable to generate a temporary class (result=1). error CS0030: Cannot convert type 'demo3.gpxTrkTrksegTrkpt[]' to...
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