I'm working on a small project (that is due tomorrow) in which I am trying to find the cost path from one freeway mile marker to another and I am having an issue. When I try to calculate cost distance for just one of the mile markers (by choosing it in the shapefile's attribute table) the cost distance function doesn't work properly. However, if I do cost distance for the whole shapefile without choosing any point in particular, it works fine. Does anybody have an idea about why it won't work for my selected point even though it works fine when it's done on the whole shapefile?
(Please let me know if you need more details about what's been done so far in order to be able to take a stab at what the problem is.)