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How to get drive distance polygon with ServiceAreaTask?

Question asked by yo_haha on Jan 15, 2015



I'm using an ArcGIS Online ServiceAreaTask to calculate drive-distance polygons. In the ServiceAreaParameters that I pass to ServiceAreaTask.solve(), there is an attribute named impedanceAttribute. In the API reference, it's explained that this attribute can take "Time" or "Length" as value:

When I switch between Time and Length, I get exacly the same polygons. I guess that impedence attribute isn't taken into consideration by the task.

I'm using ArcGIS Online services. So, I have no access to the Network.

Am I doing something wrong?