I have been requested to show on a geographic map the volume (in meters cubed m3) of freight (parts) that ship to various cities (Canada/USA). The idea is to show which cities receive the most freight by volume.
Presently the only mapping tool I have accessible is Microsoft Mappoint 2002.
Is there another webbased tool that I could use that does a good job of showing volumes relative to each other? Mappoint has a feature to show sized pie charts - is the best type of method of showing total volume by city along with the individual contributors?
I am not trying to show the flow of parts - only the size of origin and destination. For example does Toronto, Ontario have 100m3 of parts and Buffalo, New York only 30m3 of parts?