<span style>Hello all!</span><div style><br></div><div style>I am creating drive time radii (or isochrones) by allowing the user to click on a map surface and entering a number of minutes.</div><div style><br></div><div style>
Using the driving_distance function in pgrouting I am able to get very close to a good solution, but it is somewhat limited in that you can only route from node to node (vertex to vertex). In order to improve the accuracy, I thought I would try to insert a new node/vertex as close as possible to the coordinates that my user clicked. That way my start node would always be as accurate as it can be.</div>
<div style><br></div><div style>Has anyone done this? I'm not sure I understand the assign_vertex_id function and how the graph is constructed well enough to come up with a solution myself.</div><div style><br></div><div style>
Any help or direction is appreciated!</div>