I have a few routes created and stored as a feature class in a GDB. When using the create route tool there is an option to choose the starting point of the routes. However, I only have certain routes that start TOP LEFT (of the bounding rectangle), some start LOWER LEFT etc etc. Is there a way to change the starting measure point after you have created routes or am I going to have to create routes in groups (those with lower left start points, the upperleft etc) and then merge afterwards?
I think you are going to have to create in groups. The arcgis tools are somewhat generic in my experience... The generic-ness is largely because linear referencing is implemented so differently between different organizations -- mostly due to the legacy nature of the systems and ground locations that retain the LRS measurements.
if I put the tracks from the GPS to Shapefile, and then into a GDB (creating routes preferred a feature class as opposed to an shp) that linear referencing wasn't necessary. I was just trying to create points at given intervals. USing the tracks before I turned them into routes and editing using the construct points worked a treat and got the start and end points correct every time