I am trying to represent the average speed of some ship in the north of Mediterranean sea.
I am interested in aggregate the speed information by zone.
The raw data I am working with are .shp with the following information: Lat_first;Long_first;average_speed
the representation is the following:
I have managed to create a vectorial grid and then calculate the average speed in every polygon as shown here and spatial join the two layers:
the result is the following picture:
which has correct data but is too squared, I would like to smooth the edges to create something more similar to a heat map or interpolation.
Do anybody have dome ideas ? I am currently using QGIS but I would change if someone has a simpler procedure on some other software.