I'm new to this, so my apologies if this is a stupid question. Using the kbase articles, I got as far as a map with the width of the lines interconnecting the points on the map proportional to a measure. What I'd like to see is that when multiple lines come together into one city, I'd like that to show a circle with radius proportional sum of the lines coming in. For example, if you have city A with lines from City B-A=10, City C-A=50, D-A=10, E-A=10. Picture a the city A at the center and lines radiating out B, C, D, and E, and C is the "fattest" line.
I'm able to size each line correctly, but I'd like a round circle at city A that is the sum of everything coming in (in this example, a circle with radius 80). That's where I'm struggling - I'm just getting a jumble of numbers at the hub, and no wau to create a resizable node. Can anyone point me to a how-to, or give some tips on where to go with this? Attaching a screenshot. Thanks in advance for any help.