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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.

enter image description here

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?

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    – Ian Turton
    Mar 7 at 11:39

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If I understand correctly, you would like to plot your point data like a spatially continuous map. To do this, firstly you need coordinates (latitude and longitude) of the cities, and then you can use QGIS (freely available) to do spatial interpolation. There are different methods used for spatial interpolation. This QGIS tutorial explains them very well.

http://www.qgistutorials.com/en/docs/3/interpolating_point_data.html

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