topic Re: Symbology from FeatureLayer in ArcGIS API for Flex Questions

Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 10:48:45 GMT

Hi,

I got this problem, I have a FeatureLayer from Url

var featureLayer:FeatureLayer = new FeatureLayer(url);

But, the property Renderer (about symbology) in the FeatureLayer is null, and I want to change the the symbology properties.
I got a Polygon with the property Style "solid" and I want to change and set to "backwarddiagonal".

Thanks.
Bruno

Re: Symbology from FeatureLayer

RobertScheitlin__GISP — Sun, 12 Dec 2021 02:41:03 GMT

Bruno,

Simply define one in code and assign it to the feature layer.

                            var sr:SimpleRenderer = new SimpleRenderer();
                            var oLine:SimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,0xff0000,0.8,1);
                            sr.symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_BACKWARD_DIAGONAL,0xff000,0.8,oLine);
                            featureLayer.renderer = sr;

Re: Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 10:57:56 GMT

Hi.. in a url property about symbology i have this

Renderer:
Simple Renderer:
Symbol:
Simple Fill Symbol:
Style: esriSFSSolid, Color: [85, 255, 0, 255]
Outline:
Simple Line Symbol:
Style: esriSLSSolid, Color: [Undefined], Width: 0,4

Re: Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 11:00:23 GMT

But how I get color properties?

Thanks!

Re: Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 11:01:50 GMT

I can set a new renderer, but I have to keep the original color

Thanks
Bruno

Re: Symbology from FeatureLayer

BrunoPereira1 — Sun, 12 Dec 2021 02:41:06 GMT

But how I get color properties?

I can set a new renderer, but I have to keep the original color

Thanks
Bruno

Bruno,

Simply define one in code and assign it to the feature layer.

                            var sr:SimpleRenderer = new SimpleRenderer();
                            var oLine:SimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,0xff0000,0.8,1);
                            sr.symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_BACKWARD_DIAGONAL,0xff000,0.8,oLine);
                            featureLayer.renderer = sr;

Re: Symbology from FeatureLayer

RobertScheitlin__GISP — Thu, 29 Sep 2011 11:24:56 GMT

Bruno,

Since the renderer is null I guess you would have to get the first feature from the feature layer and then get the symbol from the graphic and get all the way down to the simpleFillSymbol's color property. I don't have any code examples for this.

Re: Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 12:41:48 GMT

Robert,

I've tryed that, but the symbol is null, like the FeatureLayer...
When I add that FeatureLayer on myMap the color and everything is the same way on the Mapserver, I just need to add with a different style.

I look Inside the FeatureLayer I can see on debug mode the property FeatureLayer > Extent > DefaultSymbol and there I have the style, but I don't have access, I can't set that property!
I can't get properties of the symbol from the FeatureLayer!

😞

Thanks!
Bruno Faria

Bruno,

Since the renderer is null I guess you would have to get the first feature from the feature layer and then get the symbol from the graphic and get all the way down to the simpleFillSymbol's color property. I don't have any code examples for this.

Re: Symbology from FeatureLayer

RobertScheitlin__GISP — Thu, 29 Sep 2011 14:28:04 GMT

Bruno,

You can get the renderer from the drawingInfo. Make sure that the layer is loaded first though by calling this line after the featureLayer.load event

featLay.layerDetails.drawingInfo.renderer

Re: Symbology from FeatureLayer

BrunoPereira1 — Thu, 29 Sep 2011 18:13:41 GMT

Robert, Thanks for Help!

Bruno,

You can get the renderer from the drawingInfo. Make sure that the layer is loaded first though by calling this line after the featureLayer.load event
featLay.layerDetails.drawingInfo.renderer