anyone know what type of plotting this

hello how can i plot something like this ?

[Walter Roberson]

Is that something to do with mapping?

[m. muner]

yes i need to plot cellular network sites i have plotted them as circles but i want the above plotting for more reality

[Walter Roberson]

Would it be okay to work with rectangular images, or does it need to be on projective axes (that is, one that knows about the curvature of the Earth) ?

[m. muner]

i don't get what mean but it is like a map but not real map just image in fact I'm more interested in the small colored radiation shape