I've used MapInfo for over 20 years and have used FME only a few times. I've been struggling to get the shortestpath finder to run on a large data set. I've read through many of the Q&A here and the documentation and have done the following:
Data sources:
TIGER road network
To/From line segments.
Data prep:
1) I ran the TIGER file through the topologybuilder as was recommended.
2) I used the coordinateextractor to pull the start and end node from each road segment (start = coordinate index 0 and end = coordinate index -1)
3) I used the neighborfinder to run my TO points file (base) to the nearest start/end node (candidate) and used the candidate x/y coordinates for my new TO location. I then did the same thing with my FROM points file.
4) I created a polyline using the new To/From nodes (I did this in MapInfo as I couldn't figure out how to do it within FME)
Up till now, everything worked perfectly. I received no errors and the To/From polyline starts and ends along the network as it should.
5) I ran the shortestpathfinder on my road network and the To/From polyline file. I did not use the snapping since the polyline already falls on the road network nodes. However, I get a string of errors in blue text that says: No shortest path found from (list of coordinates).
The frustrating part is that there are valid routes:
The grey is the road network
The black line is the To/From polyline that gave me the "no route can be find" error.
The green is the highlighted route I created that connects the two nodes. The green line is completely contiguous.
Does anyone know why it says no shortest path found?
