How to create a 3D map with mapbox and KNIME

Lately I am exploring how to create a 3D map with mapbox and automate certain tasks with KNIME to visualize geolocated data.

The challenge: create a 3D map

As you know, I have a special interest in the Camino de Santiago. The challenge was:

• Using public information from the CNIG about all the Caminos de Santiago.
• Providing extra added value to GPS positions with elevation data.
• Use #nocode tools.

Starting data

The starting data are GPX files from the CNIG portal. I unified 1,015 individual files into a single database of GPS points.

First problem: missing elevation data

To solve this, I used the open-elevation.com API. Using a KNIME workflow, I downloaded elevation for over 105,000 points in less than 4 minutes.

Result

The result is an interactive map where you can appreciate the topography of the Caminos.

You can download the full workflow from the KNIME Hub.