Monday, June 13, 2016

Detection of different tracks in the same file

One of our users found that the point displayed as the ending of the trail wasn't the real ending. 

We post here his question and our answer detailing how IBPindex detects the different tracks present in a file.

Our user's question:

Track: guillena-the-bulls-castilblanco-trial-guillena.gpx

The route is not complete. The arrival displayed is not the real end. It should be the same as the starting point.

Our answer:

IBPindex has a detection system that looks for the different tracks that can be at the same file. In your case, there is a separation of nearly 1.5km between two of the recorded points, they are considered as belonging to two different tracks, and system analysis only the first part of the file.

I send you the modified track, adding some points so that there is not such a big separation between them.

Joan Casares


Wednesday, June 8, 2016

GPS device that generates incorrect data in gpx format files

One of our users recorded a route in two GPS devices: Garmin and Polar

The results displayed by IBPindex were pretty similar. Oddly, the analysis of the files generated by Polar was rather different depending on whether the format of the file was GPX or TCX.

After the analysis of the files we found that, for the same route, the device included different data in the file depending on whether the format was GPX or TCX.

We quote here the question of the user:



Good evening,

I have a question I would like you to solve for me, if possible.

I have a Polar M400 and Garmin Vista HCX. Polar allows me to download data from the same route in formats GPX and TCX, and only GPX in the case of Garmin.

When analyzing the files with IBPindex, I find three different results. I could understand differences between Polar and Garmin, all in all, these are different devices and configuration settings can be also different.

But, in the case of Polar, the same track gives very different results depending on the format you download it (either GPX or TCX).

What can be happening?

I send you attached the three files.

And the conclusions of our analysis:

The correct tracks are "2016_06_05 _-_ garmin_vista_hcx.gpx" and "2016_06_05 _-_ polar_m400.tcx".  

"2016_06_05 _-_ polar_m400.gpx" is incorrect.

This image shows a comparison of the data exported from Polar in the GPX and TCX files.

TCX GPX data comparison

The GPX height data accumulates many mistakes. It seems there may be something wrong in the conversion process to GPX. 

It would be very interesting to see if this only happens with this trails or happens in all cases.

If you can do some tests, please let me know what are the results. Is there perhaps a problem in the firmware of the device?

Joan Casares

Monday, June 6, 2016

GIRO D’ITALIA 2016 – Know the details and IBPindexes of all the stages

On May 29, Sunday the Giro d’Italia ended in Turin with the Italian Vicenzo Nibali (Astana Pro Team) as the winner. 

Check out here all information, statistics, IBP indexes and tracks of all the stages.

Vicenzo Nibali shared the podium with the Colombian Esteban Chaves (Orica-GreenEdge) at 0’52’’ and the Spaniard Alejandro Valverde (Movistar) at 1’50’’. The Spaniard Mikel Nieve (Sky Team) won the Maglia Azzurra / Blue Jersey awarded to the winner of the Mountains classification.

The 99th edition of the “Corsa Rosa” went through four countries: the Netherlands, Italy, France, and Germany. Check out here the IBP indexes and tracks of all the stages.