When trying to create my time calculations from speed limits (mph) i have it fails. I do not have a distance field and network analyst is creating my length attribute on its on using my [Shape] field. So i thought that for my time attribute i could possibly do ([shape]/[speed])*60 for my minutes. Unfortunately this does not work, I had thought about projecting my data into a different format, so I could create a miles length field, but will that mess with my data in the future or is that okay for something like this?
Thanks
Thanks
Any chance you can post a partial feature class set? The only attributes needed are the shape length in your map units and the speed limit. It seems like your work flow may be out of whack somewhere on making your calculations. I'd be happy to lend another set of eyes.
In your original post you gave the equation of [Shape/speed] * 60; I suspect that you meant [miles/speed in mph] * 60 to calculate the time it takes to traverse a given segment.
See the help here for more info:
http://resources.arcgis.com/en/help/main/10.2/index.html#//00170000004m000000
Jay Sandhu