ADJUST GPS TRACK TIME WITH GPSBABEL SOFTWARE
ADJUST GPS TRACK TIME WITH GPSBABEL WINDOWS

It stores distance, date, time, burned calories, heart rate, speed, location, and more details. While GPX is more of a generic GPS file format, the FIT file format is especially used to save data while using GPS devices when doing activities like bike racing, cycling, running, swimming, and more.

ADJUST GPS TRACK TIME WITH GPSBABEL WINDOWS

That's great news! I don't really program and so don't really have a clue Michiel should be able say why he's used R, and whether he considers his use wizardry.Want to convert GPX to FIT on your Windows PC? GPX ( GPS eXchange Format) and FIT ( Flexible and Interoperable Data Transfer) both are GPS data file formats used to store tracks, waypoints, and routes. I would, however, go as far as first filtering the source GPX tracks to remove jitter, in case you spent some time in one spot. Parsing the GPX format would be the most difficult part (GPSbabel would probably help). If I had an extra hour, I could throw a quick Qt GUI on top of it. Not a very difficult approach to replicate in python or perl, or even C - if one has the time, of course. Essentially, a least-squares error algorithm, which is what I would choose. Just picking the track with the most points as the reference trackand then picking the closest points on all the other tracks and averaging the locations. I looked at the script, and this being 9pm on a workday, I didn't really see any R wizardry aside from matlab-style matrix accesses. But that will take quite some more effort and help from others to happen. It should be possible to wrap and package it so that all the interaction with R happened in the background though. I think the script is quite dependent on R functionality, so I don't foresee it freeing itself from R anytime in the near future. R is open source but not very common amongst 'normal' mappers. Would it be possible to have a version of the script in - say - perl or python? The more time you go through the same track the more precision the result will have. What I'm looking for is for an application that would do this automatically for me. and get an even tighter estimate of the track. When I've got a result I could start doing the process with the results (3 at a time sequentially). If I've got 4 tracks I could do this process with every file (3 files at a time, all variants). Using this points I would obtain a much more precise track. The central point of the triangle would be considered a nice estimate where the maximum error should probably be less than the radius of the circles I've described.

If I draw lines between this points I get a triangle. When thre circles cut each other I would have an union area defined by three points. Whenever 3 or more of this fictional circles cut each other I would consider I've found a precise location. Then I would start looking on all the other GPX files of the same track doing the same exact thing. I could get a point from a GPX file, and create a fictional circle around it of X meters or centimeters (Whatever precisiГіn you wish). Well I guess it could be done as the GPS receiver does internally. So, ВїHow to tell which is the closest one, or has a greater precision? This is reasonable as the GPS can have errors of a few meters so none of the GPX files are 100% precise. but the GPX files of the same track won't overlap all the way (Although they will at some points).

ADJUST GPS TRACK TIME WITH GPSBABEL SOFTWARE

If I know my toughest turn has been around 90 degres, I could savelly stated that any bearing of 110 degrees or more is a false location.ДЄll this things can be done with the software at that page and surelly help. Knowing two points I can also get my bearing. For example 10 Km/h would probably be a excesive speed if I tracked the path walking and therefore it can be discarded automatically. Knowing two points and the time it was recorded (Present on the GPX file) I know the distance and time taken.

So, more or less what I'm looking for is:ДЇilter out incorrect data from the GPX file. Therefore my intention is driving/walking/whatever over the same track several times.

some seem to look at the DOP which is nice but my iPhone Application won't save DOP. There are some applications that are really usefull if you've got a single track, such as the filters removing too much SOG (Speed Over Ground).

Adjust gps track time with gpsbabel