[OSM-talk] NMEA altitude versa barometric altitude

[Andy Robinson]

Stephan,

Welcome to OSM :-)

At present nothing other that the latitude and longitude from the GPX file
is used. However the gpx files are not thrown away and might one day be
re-imported to drag more information out of them. They are of course also
available to anyone to download if you choose to make them public so someone
else may have a use for the extra data.

Having said that, altitude accuracy just from satellite data (ie no
barometric or other information) is not a great deal of use anyway due to
the poor accuracy. There is also free height data available to place
contours on maps so elevation information is not really critical for OSM at
this point in time.

Hope that helps.

Cheers

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk 

>-----Original Message-----
>From: talk-bounces at openstreetmap.org [mailto:talk-
>bounces at openstreetmap.org] On Behalf Of Stephan Schildberg
>Sent: 02 September 2006 1:13 PM
>To: talk at openstreetmap.org
>Subject: [OSM-talk] NMEA altitude versa barometric altitude
>
>Hello GP-Mappers,
>
>I am a novice on this list and intend to help out collecting data in
>Hamburg (Germany) because your project is so appealing.
>As I don't process a GPS-device yet, I am thinking about one which can
>log the altitude as well.
>
>a) do you store data from 'altitude'?
>b) can you display the 'altitude'?
>c) do you accept only GPS data for altitude?
>d) do you accept barometric measures?
>
>I intend to use it in Hamburg which is close to sea level but we have
>some hills here,  up to unbelievable 91,6 meters and even more!
>Your answer has a direct impact on my selection of the device.
>
>thank you + regards.
>Stephan Schildberg
>
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