Service Area not making multiple classes.

Discussion created by cblinnmrc on Aug 16, 2011
Latest reply on Aug 17, 2011 by cblinnmrc
Hello All,

I am trying to create a service area, but I am having some difficulties.  I have done this before and for some odd reason my methodology is not giving me usable results.  I have created my network from a road dataset, created a Time Cost attribute (in minutes), set the evaluators to the TIME field in my dataset (which is calculated from my SPEED and LENGTH fields).

I then add the network dataset to ArcMap, create a new service area, add my locations, edit the settings (Analysis Settings ---> Impedance (Time, [Minutes], Default Breaks (2, 4, 6, 8, 10, 15, 30, 60)), Away from the facility, Ignore Invalid Locations; Polygon Generation ---> Generalized, Trim Polygons, Merge by break value, Disks; Accumulation ---> Both Time and Distance).

The output service area is one polygon with a value of 0.

Any ideas why it is not reading the time attribute correctly?

Any suggestions welcomed!