arcgis-10.2arcgis-desktoparcmaplegendrepresentation
When a layer with Representations is turned on, how do you change the 'Description' in the Legend. The setting is normally under the symbology tab and it is not visible when Represenations are turned on. The layer is shown in the legend as the field it is shown on.
Can you modify the 'description' under symbology to show the title of the layer as any text you type in?
I'm using ArcGIS 10.2 for Desktop.
It's a slight fudge but try setting Width and Height on the Override default patch size part of the Legend Item properties to be very small but not zero i.e. 0.001. In my test it looks like the patch is either not there at all, or is too small to see. If you set to 0 then patches return to original size.
To omit Legend, you have to set Legend::LayerInfos parameter which LayerInfo you want to show. As bellow,
//add the legend
dojo.connect(map,'onLayersAddResult',function(results){
var layerInfo = dojo.map(results, function(layer,index){
return {layer:layer.layer,title:layer.layer.name};
});
if(layerInfo.length > 0){
var legendDijit = new esri.dijit.Legend({
map:map,
layerInfos:layerInfo
},"legendDiv");
legendDijit.startup();
}
});
map.addLayers([waterbodies,rivers]);
This code is from ESRI's sample. http://help.arcgis.com/en/webapi/javascript/arcgis/jssamples/widget_legend.html
This sample shows only two layers and do not show basemap Layer.
EDITED:
If you are adding DynamicMapServeLayer instead of FeatureLayer and want to control each Layers visibility inside of the MapService, you need to refresh LayerInfo with hideLayers parameter.
//show only index of 0 Layer
//layer is ArcGISDynamicMapServiceLayer object
layer.setVisibleLayers([0]);
// get legend dijit
var legendDijit = dijit.byId("legendDiv");
var visibleLayers = layer.visibleLayers;
var layerInfos = layer.layerInfos;
//create hideLayers array from layerInfos which layers are not visible
var hideLayers = [];
for (var i = 0; i < layerInfos.length; i ++) {
var layerInfo = layerInfos[i];
if(visibleLayers.indexOf(layerInfo.id) == -1){
hideLayers.push(layerInfo.id)
}
}
//refresh legend dijit with hideLayers
legendDijit.refresh([{layer:layer, hideLayers:hideLayers}]);
Best Answer
Slight modification in loki's Answer; in Layer Properties, Symbology tab settings, under Representations, chose the Representation you wanna modify, and edit the lable as you want. If want to change the Polygon as line, add line instead of polygon representation, or by deleting any unwanted representation...
figures for you reference..