topic Re: Composite and Cartographic Line Symbols not returned in Renderer objects in ArcGIS API for Flex Questions

Composite and Cartographic Line Symbols not returned in Renderer objects

DanJensen — Fri, 15 Oct 2010 19:00:41 GMT

When attempting to build symbols for a dynamic legend, the composite and cartographic line symbols are drawn incorrectly. These are the dashed line symbols or the symbols with layers of lines combined to make a single symbol. For example the standard railroad and county boundary symbols that are commonly used. When attempting to determine why, it is evident that the API only returns simple line symbols even though there are compositeSymbol and cartographicLineSymbol objects in the API.

Is there a setting I can change or a solid work around for this issue?

Thanks,
-Dan

Re: Composite and Cartographic Line Symbols not returned in Renderer objects

DasaPaddock — Mon, 18 Oct 2010 16:10:33 GMT

Are you referring to the Symbol.createSwatch() method?
http://help.arcgis.com/en/webapi/flex/apiref/com/esri/ags/symbols/Symbol.html#createSwatch()
"Swatches only work with symbols which are supported in the FeatureService, i.e., swatches are not supported for CompositeSymbol, InfoSymbol and TextSymbol."

It should be working for CartographicLineSymbol. See:
http://forums.arcgis.com/threads/9074-Legend-for-CartographicLineSymbol?p=27861#post27861

Re: Composite and Cartographic Line Symbols not returned in Renderer objects

DanJensen — Mon, 18 Oct 2010 17:31:57 GMT

All,

Yes, I am reffering to the createSwatch method. Here are some pictures I think will more fully describe my issue. The mxdSymbolProperties shows the properties of the symbol being accessed in Flash Builder 4. This image indicates that the layer is symbolized with a cartographic dashed line. The SimpleLineOnly image shows that the renderer object offers this to the programming environmnet as a simpleLineSymbol, which lacks the dashing necessary to correctly create a swatch for a legend.

I was wondering if I need to do something special to make the renderer offer a cartographicLineSymbol for me to create a swatch from?

Thanks,
-Dan

Re: Composite and Cartographic Line Symbols not returned in Renderer objects

DasaPaddock — Mon, 18 Oct 2010 18:57:38 GMT

The ArcGIS REST API doesn't support returning Cartographic Line symbols. It does support simple line symbols with different dash styles though:
http://help.arcgis.com/EN/arcgisserver/10.0/apis/rest/symbol.html#sls

After you've republished your service and cleared the REST cache, you can check to see what the style is in the layer's service directory pager. e.g.,
http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Network/USA/MapServer/6 (style is esriSLSSolid)