Basically, I have a number of data across a number of UK cities (London, Aberdeen, Birmingham, etc.). I want to plot them onto a map and then use something like a "contour map" to get something similar to this.
I have been trying to figure that out using MATLAB, Origin, python, etc. but I am lost. I am thinking about using an ordinary map and plotting the data to the corresponding cities. Then, using spline or interpolation of some sort. Any ideas or recommendations?