Just been working on a "fun" project for my IoT students.
Plotting the location of wildfires on the Dashboard.
It makes use of data from NASA to plot markers on the worldmap node on the Dashboard.
Although most of the function nodes (in the flow) use JavaScript, there is a section in the tutorial-guide that introduces some very basic JSONata to query and transform the array-data received from NASA.
I must give credit to @E1cid for his work creating the Jsonata in the Change node and for his suggestion to set the coordinates for the various regions in the buttons. This simplifies the processing in the Change node and makes the overall flow much simpler and easier to follow.
Here's a link to the tutorial guide and the Node-RED flow.