The Shortest Walk component is very useful for urban analysis, I’ve been using it a lot lately. Hope it will be part of GH2.
I want to suggest one thing because I’m working with GIS data, which is not always dead accurate. For example lines that make up a node in a network of roads don’t exactly end in the same point. Which makes the component report “No walk found for line at position x, Are end points isolated?”
It would be useful to have some tolerance input, so even though the line ends are far apart by a few millimeters the component would compute the path.