Display selective features from a layer?

[JatinPatel]

I have a layer (Not a feature layer). Is it possible to display only a few selected (based on a query) features from that layer on the map?

[KenBuja · Accepted solution]

The layerDefinitions property can be used to filter the features of the individual layers in a map service. Take a look at the code snippet.

[JatinPatel]

Thanks Ken!!

[JatinPatel]

The layerDefinitions property can be used to filter the features of the individual layers in a map service. Take a look at the code snippet.

Ken,
Is it possible to set a criteria using geometry in this case?

[ZachLiu1]

Do you mean selection by location?

You can define a QueryTask and in your Query definition you can set your query geometry and type of relationship, and display only the features you want in a graphic layer.

Hope this will help.

[JatinPatel]

Do you mean selection by location?

You can define a QueryTask and in your Query definition you can set your query geometry and type of relationship, and display only the features you want in a graphic layer.

Hope this will help.

Querytask will not work. It can only create a dummy graphic on top of the layer, I would like to actually display the layer itself with only the features that fall inside a certain geometry, just like layerDefinitions for an attribute criteria.

[JasonZou]

There is no easy solution for what you need. One option I can think of is like the following workflow.

• Create a feature layer


• Set its renderer to blank symbol so that no features will be displayed.


• setSelectionSymbol to symbols for the selected features.


• Use selectFeatures to apply the criteria defined by both attributes and geometries.

This way, it will only display the features filtered by attributes and geometries.

[VinayBansal]

There is no direct solution. Other option can be....

Use querytask to get the objectIds of the features of layer within the geometry.
And then set the layerDefinitionExpression for the the layer by passing the returned ObjectIds. Like OBJECTID IN (1,2,3.......)


But there might be the limitations of number of objectid's to be passed to the layerdefinition expression. If records returned are more...

[JatinPatel]

There is no direct solution. Other option can be....

Use querytask to get the objectIds of the features of layer within the geometry.
And then set the layerDefinitionExpression for the the layer by passing the returned ObjectIds. Like OBJECTID IN (1,2,3.......)


But there might be the limitations of number of objectid's to be passed to the layerdefinition expression. If records returned are more...

Thanks Vinay... I think that will solve my problem...!!

[AlessioDi_Lorenzo]

There is no direct solution. Other option can be....

Use querytask to get the objectIds of the features of layer within the geometry.
And then set the layerDefinitionExpression for the the layer by passing the returned ObjectIds. Like OBJECTID IN (1,2,3.......)


But there might be the limitations of number of objectid's to be passed to the layerdefinition expression. If records returned are more...

Hi,

I am using exactly this approach to obtain a server-side response to a buffer query. The problem is that it works until the returned features (points, in my case) are 999. Then arcgis server returns a blank image in my arcgisoutput directory.
I already set the maxRecordCount variable to 5000.
Any help?
Thank you!