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Comments (5)

EmersonLopes avatar EmersonLopes commented on May 23, 2024 1

Try

SETCHAN channelFord INTERSECTS cars WHERE 'info.brand == "ford"' FENCE DETECT inside,outside [...]

With this command the result was the same

from tile38.

tidwall avatar tidwall commented on May 23, 2024 1

The WHERE clause is considered to be part of the geofence constraint.

Basically the INTERSECTS command you are providing says:

For all cars that are inside of the provided polygon and are a ford, send an "inside" event, otherwise send an "outside" event.

Perhaps using "enter,exit" instead of "inside,outside" will give you better results, because an "exit" event cannot happen unless the car was previously considered inside.

from tile38.

iwpnd avatar iwpnd commented on May 23, 2024 1

My bad, I overlooked your inside,outside

Using a channel like so:

SETCHAN channelFord INTERSECTS cars WHERE 'info.brand == "ford"' FENCE DETECT enter,exit OBJECT {"type":"Polygon","coordinates":[[[-87.6875402606167,41.91766993152294],[-87.6875402606167,41.91053637115587],[-87.67749935516063,41.91053637115587],[-87.67749935516063,41.91766993152294],[-87.6875402606167,41.91766993152294]]]}

works as expected on ford vehicles, but ignores everything else.

>> 127.0.0.1:9851> SET cars ABC1234 FIELD info {"brand":"ford","year":"2010"} POINT 41.91323014924143 -87.68240968749839
>> {"ok":true,"elapsed":"1.109292ms"}
>> {"command":"set","group":"64ef2d1716fcd30001286d1d","detect":"enter","hook":"channelFord","key":"cars","time":"2023-08-30T11:50:46.999727689Z","id":"ABC1234","object":{"type":"Point","coordinates":[-87.68240968749839,41.91323014924143]},"fields":{"info":{"brand":"ford","year":"2010"}}}
>> SET cars DEF5678 FIELD info {"brand":"bmw","year":"2012"} POINT 41.91323014924143 -87.68240968749839
{"ok":true,"elapsed":"235.875µs"}
>>

from tile38.

iwpnd avatar iwpnd commented on May 23, 2024

Try

SETCHAN channelFord INTERSECTS cars WHERE 'info.brand == "ford"' FENCE DETECT inside,outside [...]

from tile38.

EmersonLopes avatar EmersonLopes commented on May 23, 2024

Got it, thanks for the help guys.
Enter, exit really works
I will use enter, exit

from tile38.

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