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Select and Get Geometry

jaykapalczynski

I want to target a specific Layer in my app (make that selectable to this tool)
Allow the user to select a feature in the map
Get its Geometry and select features inside that geometry

What would be my option? any examples?

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Accepted answers

JakeSkinner

Hi Jay,

Is something like this example what you are looking for? The app allows you to select a county, and all of the cities within that county are selected.

All comments

jaykapalczynski

.......................................................................

jaykapalczynski

Thanks Ken...will do. Cheers

kenbuja

Jay, I would suggest reading up on events. The JavaScript API has a good help topic on it and the Dojo documentation for "on" goes into much more detail about how you get more control over events...turning them on and off, pausing them, etc.

jaykapalczynski

I do have one last question.

I am doing to below to select a specific feature and create a graphic. Works fine.

But I cannot turn it off....how do I turn off the MAP CLICK to this feature. I want to use to have to select the button every time the wish to use this.

        registry.byId("RegionSelection").on("click", function() {
             var highlightSymbol = new SimpleFillSymbol(
       SimpleFillSymbol.STYLE_SOLID,
       new SimpleLineSymbol(
       SimpleLineSymbol.STYLE_SOLID,
       new Color([255, 0, 0]), 1),
       new Color([125, 125, 125, 0.35]));

       petroFieldsFL2.on("click", function (evt) {
          map.graphics.clear();
          highlightGraphic = new Graphic(evt.graphic.geometry, highlightSymbol);
          map.graphics.add(highlightGraphic);

          var query = new Query();
          query.geometry = highlightGraphic.geometry.getExtent();
         })
        });

jaykapalczynski

Yes this is....perfect.....Cheers...I simply need the Geometry of the selected Feature. I am then using that Geometry to feed an Extract GP tool...
Thanks

JakeSkinner

Hi Jay,

Is something like this example what you are looking for? The app allows you to select a county, and all of the cities within that county are selected.

jaykapalczynski

I think I can do something like this

 map.on("click", function(evt) {
            selectQuery.geometry = evt.mapPoint;
            petroFieldsFL.selectFeatures(selectQuery, FeatureLayer.SELECTION_NEW, function(features) {
              if (features.length > 0) {
               //store the current feature
                updateFeature = features[0];

// Dont know how to Highlight the feature
// How do I grab its Geometry and use it for a Buffer Select

              } else {

              }
            });
          });

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