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Motivation

Many systems have data stored in GPS coordinates (latitude, longitude). To be able to integrate and showcase them in twinzo - Digital Twin platform, they need to be recalculated to local twinzo coordinates. This guide will show you how.

GPS items creation

In the twinzo portal go to bookmark Places/GPS items (documentation here). Without knowing where North is on the layout, you need at least 3 GPS items with x, y, lat, and lon Strong preference for the corners of the sector layout.

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GPS items download

Here is a screenshot from Postman, showing how to get GPS items downloaded to your software. Three important parameters are Client, Branch, and Api-Key. If you are missing any of them please ask your contact person to provide them.

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GPS item data structure

In the coming steps, we will show you examples from our Kotlin language implementation of a data structure and calculation.

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class MyPoint extends Point{

  MyPoint({required double x, required double y}):  super (x, y);

  double angleTo(MyPoint in2){
    return Vector2(this.x as double, this.y as double).angleTo(Vector2(in2.x as double, in2.y as double));
  }

  MyPoint centerOfLineTo(MyPoint in2){
    return new MyPoint(
       x: ((this.x + in2.x) / 2) * 1.0,
       y: ((this.y + in2.y) / 2) * 1.0
    );
  }
}

GPS coordinates recalculation to twinzo coordinates

Now, with the established data structure we are ready to continue with the trilateration.

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This position, in combination with the Sector from where you obtained GPS items, is enough to provide data to twinzo - Digital Twin platform.