And there's a QGIS plugin to facilitate mapping proportional flow lines:

http://gis.stackexchange.com/questions/64045/how-to-create-desire-lines-in-qgis

Taking another tack, if you or a colleague have access to ArcGIS online, there are likely tutorials on YouTube showing how to do what you want using that platform.

And if the map need only be representational rather than ground accurate, you might find it simplest to make a cartogram using a 'mind mapping' app that has weighted|proportional flowline tools...

Edward Sullivan/EPS


Sent from my T-Mobile 4G LTE Device


-------- Original message --------
From: Mike Flannigan
Date:03/01/2017 05:31 (GMT-08:00)
To: [log in to unmask]
Subject: Re: Simply Map or something comparable?


QGIS is an option, though it is a heavy duty option.
It is open source and free.
If you go that way I can help you get started.


Mike



On 2/28/2017 11:00 PM, MAPS-L automatic digest system wrote:

Hi,

I was wondering if any of you are aware of any software or web application that could assist me in a project.  I’d like to create a map of the U.S. that is akin to what you see with flight route maps for airlines<http://www.delta.com/content/dam/delta-www/pdfs/route-maps/us-route-map.pdf>—except the lines would all originate from Pasadena and would venture out to cities (really libraries in those cities) where we borrow the most.  The thicker the line would mean the heavier the borrowing.  Basically, I want to show an image of our reach through ILL and could do variations with borrowing and lending or article and books.

I thought about Simply Map but I don’t believe we have a subscription to that.  Scribblemaps.com could possibly work.  Are there any others that you are aware of?


Tony Diaz
California Institute of Technology
Pasadena, CA