Is there a standard algorithm for detecting pauses in GPX files? The use case is that RunKeeper (iPhone & Android app at runkeeper.com) doesn't pause users...
2152
fgdufoe3
Feb 28, 2011 1:55 am
I've noticed what I believe to be a few errors in the documentation. Here are the changes I suggest: wptType: "wpt represents a waypoint, point of interest,...
2153
the_magicien
Feb 28, 2011 1:56 am
Dear All, I want to create GPX file and upload to the my Garmin 60CSX gps device. Please advice me how I able to do that. Thanks...
2154
ragge0
Feb 28, 2011 1:56 am
Hello, Is there a recommended way to represent Accuracy or EPE (estimated position error) in distance (meters) in GPX? /ragge...
2155
Robert Lipe
robertlipe
Feb 28, 2011 1:58 am
... This list really is more for the development of the GPX file format itself than about how to use any specific piece of software. There are a large number...
2156
Robert Lipe
robertlipe
Feb 28, 2011 2:01 am
... As GPX is about exchanging GPS data between vendors there is no standard representation of EPE in the industry (most vendors won't even document how it's...
2157
Robert Lipe
robertlipe
Feb 28, 2011 2:03 am
... Lots of programs do this differently. You can denoise, look for low speed, look for clumps in proximity, etc. Filtering really depends ont he data you...
2158
Anthony Cartmell
fonant
Feb 28, 2011 9:28 am
... That's defined by the terms "longitude" and "latitude"; to be honest, so no need to repeat it in the GPX definition. http://en.wikipedia.org/wiki/Longitude ...
2159
Tim Thornton
timtupham
Feb 28, 2011 9:51 am
I think that this does need defining. I have come across some US centric mapping tools that use West as +ve, on the basis that all of the USA is West and...
2160
Anthony Cartmell
fonant
Feb 28, 2011 10:29 am
... They're not using longitude then, and certainly not WGS84 coordinates, as used by most GPS systems. They must be using "negative longitude" instead ... ...
2161
Tim Thornton
timtupham
Feb 28, 2011 10:54 am
I agree it isn’t the normal convention, but NMEA0183 from GPS receivers explicitly uses N/S/E/W, and WGS84 defines Longitude as 0-180, +ve East. So to avoid...
2162
ragge0
Feb 28, 2011 11:11 am
... I am not talking about the EPE value (some strange vendor specific 1-20 value, agreed), but the error in meters (or feet), which many vendors do provide....
2163
Tim Thornton
timtupham
Feb 28, 2011 11:18 am
Note that different receiver manufacturers use different figures, e.g. historically many have used 95%, but others user 67%, 50%... Also, the period of time...
2164
Alan
gpsanimator
Feb 28, 2011 8:18 pm
Isn't this discussion's about HDOP (horizontal dilution of precision), which is supported in GPX? _____ From: gpsxml@yahoogroups.com...
2165
ragge0
Feb 28, 2011 8:49 pm
... Well, possibly; Is there a standard way to convert between error-in-distance (as meters or feet) and the xDOPs? (Is HDOP alone the same as the horizontal...
2166
Alan
gpsanimator
Feb 28, 2011 10:32 pm
I know my GPS reports horizontal accuracy in distance, which must be either derived from HDOP or calculated at the same time as the HDOP. Mathematically, the...
2167
Joshua Judson Rosen
Rozzin@...
Mar 3, 2011 3:52 am
... GPSd apparently includes code to do this, for the cases in which a GPS unit doesn't provide all of the numbers numbers itself--c.f.: ...
2168
ragge0
Mar 3, 2011 6:25 am
... Very interesting! Thanks for the pointer! It also says: "* The UERE constants are our assumption about the base error of * GPS fixes in different...
I am trying to start with an existing GPX file and removing waypoints which are outside an area of interest. When I write the edited file back out, neither...
2171
etheriau
eytheriault
May 4, 2011 4:24 pm
Hi-- I've noticed that the GPX files generated by Streets and Trips uses the rtept for encoding their waypoints verses what Garmin uses is a a trk. From the...
2172
cmarkc2001
May 4, 2011 4:25 pm
I am trying to build a test project that writes a .gpx file from new gps data. I've got the .gpx schema from Topografix, and i've built a "GPXType" with an xsd...
2173
Tony Kinsella
cinsellach
May 4, 2011 4:45 pm
You might like to try the validation procedure on http://www.topografix.com/gpx_validation.asp From: gpsxml@yahoogroups.com [mailto:gpsxml@yahoogroups.com] On...
2174
Anthony Cartmell
fonant
May 4, 2011 5:01 pm
... A route point is generally understood to be a pre-planned location along a route. A set of route points typically draws a set of straight lines from ...
2175
Alan
gpsanimator
May 4, 2011 8:58 pm
It's often a problem with the text editor you're using inserting non-printing characters - Notepad is a big offender here. Try changing test editor - I use Vim...
2176
Alan
gpsanimator
May 4, 2011 9:08 pm
You need to get your head around XML serialization. Here's some VB that I use to read GPX - I hope it helps. Public Sub LoadGPXData(ByVal fileName As String) ...
2177
cmarkc2001
May 17, 2011 1:38 am
Thanks for your help on this. I was able to run and adapt the code and it worked well. What i need help with now is this: creating a blank gpx file from the...
2178
jack Baker
jackb@...
May 28, 2011 2:08 pm
Sir If you want to send me the file I will check first to see if it is a good GPX file. I can remove the waypoints you don't want and send the file back if you...
2179
etheriau
eytheriault
May 28, 2011 2:08 pm
... Thanks for clarifying! That's what I had thought, but I just wanted to be sure I wasn't overlooking anything. Eric...
2180
James
jamescizek
Jun 14, 2011 4:14 pm
Hi everyone, I have a GPX file that currently has a track defined by waypoints (I believe somewhere in the neighborhood of 1400 of them) and that is all. I'd...
