I want to draw a grid map based on the temperature values in Leaflet.
Input data: lat, lon, temperature values, cities' names
Parameters: the dimensions of the grid might be about 1-0.5 degree square.
At first, I thought plot markers(icon) 1 degree at a time is the best way, but I couldn't change the marker size from pixels.
What should I do? I wonder if I need GeoJSON for that?