GPX One blog

In this series of articles, we will take you on a journey behind the scenes of the development of GPX One, a powerful GPX navigation app for car enthusiasts.

Kalman filter might help to predict current position

I am busy researching how I can better predict the position. It seems that a Kalman filter can help with this.

Snapping the user position to route

Snapping the measured GPS postition to the route was something which I had to implement. Luckily I've found a solution to overcome this problem.

I had to make my own GPS simulator for Android and iOS

Last weekend I tested the new version of GPX One. Without success. Predicting the position caused the blue marker to jump in all directions. The version you are using now works much better (despite the current position being 10 seconds behind).

An attempt for better user position estimation

We are getting better at estimating where you actually are on the map 🎉. Although it still needs some fine tuning, we are getting there.

I removed the FAB buttons from the app

Up to this point, GPX One utilized what are known as Floating Action Buttons, commonly known as FAB buttons These switches regulate 2D/3D view, GPS on/off, and whether or not the camera can follow.