Area Track buffer query error

Dear SMARTer

I have problem with my symmary query

Here the query

Here the patrol track

when I use 10meter as buffer, query running smooth, try to use 200m, its also running smooth.

But when I use 220m as buffer, query getting error
image
If I change buffer to 358m, query running smooth.
So, query will getting error if I use buffer between 220m to 357m.

How to fix this error?

Regard

Lili Sadikin
error.zip (101.4 KB)

Topology Errors can happen when there are too many track points in a small area. The most common cause is GPS left on collecting track points which stationary for a long time, which results in a “star” of a track for hours at a time, and with enough points in the same spot eventually there is a an issue querying.

The solution is to not let it happen, or clean up the data after the fact. We have a number of improvements slated for SMART 8 that will reduce the chance of this happening as well.

To clean up the data, a patrol queries over various time periods where your queries are failing and check the map views for larger clusters of track data. Info-tool query that track to figure out what patrol it is and then manually clean-up that track for that patrol.