This question already has an answer here:

I am trying to represent trade flows on a world map where the size and direction of arrows indicate the exports/imports of a given country.

This type of map is commonly found in magazines and newspapers. However, I find it extremely difficult to make.

Is there any function in ArcGIS for Desktop or any free software that would help me in making it?

merged by PolyGeo Dec 28 '18 at 23:05

This question was merged with Representing network flows? [closed] because it is an exact duplicate of that question.