gpsxml : Message: Re: [gpsxml] Velocity and direction

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Message #1239 of 2039 |

Re: [gpsxml] Velocity and direction

> > Is there possibility to store velocity and direction on a GPX file?
> > Which tags?

GPX 1.0 has a "speed" and "course" tags:
http://www.topografix.com/gpx_manual.asp

Unfortunately, these were accidentally left out of 1.1.
http://www.topografix.com/GPX/1/1/gpx.xsd

> little point as the rest of the data in the file will give you the
> tools to calculate both velocity and direction. It would be redundant

This is generally true. It's also why we didn't notice they were left
out of 1.1 until it had been published...

RJL

Tue Mar 21, 2006 2:25 pm

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Robert Lipe <robertlipe@...>

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Message #1239 of 2039 |

Expand Messages	Author	Sort by Date
Is there possibility to store velocity and direction on a GPX file? Which tags? Mhaxx...	Mhaxx mhaxx_me	Mar 21, 2006 12:08 pm
There is very little point as the rest of the data in the file will give you the tools to calculate both velocity and direction. It would be redundant ...	Chris Ainslie thekrustyshow	Mar 21, 2006 12:44 pm
... GPX 1.0 has a "speed" and "course" tags: http://www.topografix.com/gpx_manual.asp Unfortunately, these were accidentally left out of 1.1. ...	Robert Lipe robertlipe	Mar 21, 2006 2:25 pm
... will give you ... redundant ... I disagree. The file may not hold enough data for a precise calculation. With sparse data (eg. using a...	kruch_cz	Sep 12, 2006 7:39 pm
... redundant ... Redundant, perhaps, but if you have already calculated the velocity/direction, someone may prefer to store these results and not recalculate...	Kerry Raymond kr_afol	Mar 22, 2006 12:01 am
... I know that a lot of people have brought this up, and these values are even included in at least one of the NMEA sentences, but I have to agree with Chris....	Ricardo salcedo	Mar 22, 2006 3:49 am
... If you are in a boat or flying then your instruments will give you a different course and speed to the GPS if there is significant wind and/or tide. It is...	Mark Wigmore wiggers2uk	Mar 22, 2006 3:30 pm
This is intersting question, where I also wait answer. We are making tracking devices to many systems one example is wild animal. In there the device must be...	hlohi	Mar 30, 2006 10:13 am

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