I have a .jpg that is a highway that spans multiple towns, and a shapefile with boundaries of these towns. I have georeferenced the .jpg so that it is aligned with the shapefile of the towns. My ultimate goal is to compute the distance of each town--ideally from its centroid--to the nearest point along this highway.
Should I convert the georeferenced highway into a shapefile? If so, after I create a new shapefile--so that I have three items in the Table of Contents (the shapefile of towns; the georefernced .jpg, and the new shapefile)--where should I go from there? Any detail would be greatly appreciated.
I am using Arcmap in ArcGis 10.2.