A radar chart is useful when trying to compare the relative weight or importance of different dimensions within one or more entities. This script will produce a blank imqge that you can save as a png and add to Tableau as a map background.
To make your own Radar chart in Python, check the documentation out here https://www.pythoncharts.com/matplotlib/radar-charts/
Save as a Transparent background Png. Details found https://datascienceparichay.com/article/save-matplotlib-plot-with-transparent-background/