In this ball of yarn each line represents travels. Some go both directions, and some represent multiple people (which I might represent with widths, or by separate parallel lines). Now I am interested in making some of these more arching, somewhat like an airplane route map. Is there any smart/easy way to do that semi-automatically?
The brush is a very good way to go and the warp is a good way to make it as well but you can enhance it if you have CS 5 in a very esy wy using the width tool and the new arrow head device in the stroke panel.
You can also use the arc tool then the width tool then add the arrow head change the proportion of the arrowhead(s) and then turn it into an art brush.
The brush answer above is really and easy way to do this, the warp is a good way to create the arc though the rc tool is as well and the width tool give you an easy way to get that airline route look.
It may be mentioned that the Arch retains the end Anchor Points inherently and may be used to shape the routes so they appear natural and varied, possibly with different Horizontal/Vertical bends.
Thanks everyone - I think the warp route is excellent. I will likely apply some art brush on top of that - I just have to figure out how to do the directionality without it being too messy... Arrowheads seems to be out of the question, that would just make it too cluttered.