Issue with 'calculate service area' activity
Hi. I'm running into a problem with the 'calculate service area' activity. It seems to be an intermittent bug, whereby the polygon generated by the activity does not represent an accurate service area. The first image, shows a 3 minute walk shed and is, I believe, accurate. The second image shows another time running the workflow with the same inputs, this time creating a polygon at the same location, that is obviously not correct.
Has anyone else experienced this. 95% of the time, it works as expected, but every so often it generates an odd result like this.
This is just a prototype WF and I'm using esri network service - https://route.arcgis.com/arcgis/rest/services/World/ServiceAreas/NAServer/ServiceArea_World with my developer api key. My WF allows the end user to choose the mode of driving or walking (based on the ‘impedance attribute’ property). I have seen this bug with both drive and walksheds.
Looking for ideas what might be amiss. Or better ways to debug the WF.
Thanks
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Zorba Conlen If you are running this activity in a browser based application such as VertiGIS Studio Web, you could take a look at the network traffic to see what parameters are being sent to the network analysis service.
The workflow activity itself does not do anything special itself. It collects together the parameters, sends the request and then outputs the results that were received.
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Hi Ken,
Good thought. I did as you suggested and found that the request for a good result vs a bad one, are identical, except for minor difference in the facility location, which should not impact the service area. I also inspected and compared the response objects and they seem identical, except for the geometry returned.
After going through that exercise, I'm thinking the problem is more likely on the Esri side.
Thanks for the reply.
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Zorba Conlen You're welcome. I'm glad I could help!
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