Quick and easy way of comparing device routes

OK, some posts I have seen are along the lines of "My Garmin says I did 5.1km yet my running buddy's FitBit says 5.2km"

Both are probably within the design limits but here is a way to compare the two on the same map.

All sites that take the data should allow you to download it in GPX format - this is more or less a requirement under data laws around the world - certainly in the EU & UK the GDPR made this so.

Get the GPX files of each run.

You will need a Google account - everyone with an Android phone will have one - this will give yuo the ability to create your own maps - go to https://www.google.com/maps/d/u/0/ .  PRess Create a new map


And then Import Layer


Select the first GPX file, then rename it so you know which/whose run it was


Repeat for your buddy's or the other day's trace you want to compare


Change the style of the second and subsequent lines



  You can then see where each route has any GPS oddities in it and see if any are "better" than others

Here is one i prepared earlier


Popular posts from this blog

GPS, Running Watches, Phones, Accuracy and other stuff pt 5

So, I got myself a Garmin Forerunner 3 - a basic running watch from Garmin, good enough for what I need I also spent a bit of time re-plotting the route using the high accuracy OS Mastermap.  MasterMap in my neck of the woods is captured at 1:2,500 - which means it is 99% confident to be within 2.4 meters of the real world - see https://www.ordnancesurvey.co.uk/business-government/tools-support/mastermap-topography-support - without going out with survey gear and stuff, it is as good as you can get in most of the UK.  (Larger urban areas are captured at 1:1,250 but those be big scary places, like Exmouth) Using the new route I re-analysed the Gear Fit data and 4 runs with the Garmin, and here are the results - you can sort by the various measures (getting this working on Blogger took WAY longer than it should have) device error area samples device distance (Dd) OS distance (OSd) ...
Read more

Plex, Kodi and Logitech Media Server (LMS, Squeezeserver) on one Raspberry Pi 2

OK, mainly for my sake when I have to redo it. The issue.   I have a Home PC and a family The family use, in order of arrival. A Squeezebox 2 for music - the Squeezebox software and music being on the home PC Plex - for watching movies on other devices around the house and at Grannie's.  Plex Server is the Home PC Kodi -For watching movies and TV shows ripped from our DVD collection on the home TV.  Kodi is running on a Raspberry Pi 2 The Objective To have all these media services running on a Raspberry Pi 2.  True I know for Plex I'll have to stream the original  format of the movies rather than letting Plex re-encode depending on client.  This may change if I upgrade to a RP3 All have been setup elsewhere, but I want them all on one always on device.  Partly to let other family members use my Plex files without impactiung on the main Home PC and without me having to leave it on all the time. The Method I started with Plex,...
Read more

GPS, Running Watches, Phones, Accuracy and other stuff pt 3

Image
Enter FME FME is a massively powerful GIS data manipulation tool.  For professional use it isn't cheap, but those very nice people at Safe Software (who make FME) allow free Home use - if you ask them nicely and say what you plan to do with it.   I have a little experience with FME from work, and work with someone with a shed load more (many thanks Matt) so with my ideas and his pointers as to what tools to use, I have made this first attempt at quantifying accuracy. Let's look at a recent run The yellow line is a best fit line using open source mapping and google aerial images. The red is what my Gear Fit tracked. Now, my working theory is that by making polygons between these two (the grey areas) I should get a measure of how good the tracker was.  The smaller the overall area, the better the track was on that day The results for this first test are below - The overall Error Area (as i am calling it) is 56576.6 m2 - a lot of tha...
Read more