topic Re: IdentifyLayersAsync question in .NET Maps SDK Questions

IdentifyLayersAsync question

robymun — Wed, 24 Aug 2022 16:13:21 GMT

Hi i'm in this situation,

for example if I launch the identification near the red points I get the results correctly from the red dot layer

but if I do a small zoom out and i launch the identification in the same point and at that zoom level the layer is not visible I don't get results from the layer ... is that correct?

in this case i have zero results from dot red layer

Regards Roberto

Re: IdentifyLayersAsync question

MichaelBranscomb — Wed, 24 Aug 2022 16:31:57 GMT

Hi,

That's the expected behavior: Identify will return visible GeoElements only.

For more info see:

Method IdentifyLayerAsync (arcgis.com)

Method IdentifyLayersAsync (arcgis.com)

Thanks

Re: IdentifyLayersAsync question

robymun — Wed, 24 Aug 2022 16:39:48 GMT

hi thank you for the answer

I ask this because in the old version 10.5.2 (now we are porting to 100) this did not happen and the client asks us to identify even if the layer at a certain zoom level is not visible. It is possible to get around the problem in some way

Regards Roberto

Re: IdentifyLayersAsync question

ZackAllen — Wed, 24 Aug 2022 18:42:20 GMT

For a workaround, I suggest creating a buffer using the geometry of the tapped point. Then query the features using the buffer geometry as a query parameter. You could even scale the size of the buffer using the current scale of the map view.

Re: IdentifyLayersAsync question

robymun — Thu, 25 Aug 2022 08:15:55 GMT

Thanks for the reply

We have about 100 layers on the map, which are active but visible at different zoom levels.

So there are no other alternatives to make a query for each single layer?

Regards Roberto