Name

Type

Description

featureLayer

sg.layers.FeatureLayer

要放置文字的FeatureLayer

renderer

sg.renderers.Renderer        

文字的Renderer

textExpression

String

文字模版

labelOptions:

Object

標記選項

Name

Type

Description

geometry

sg.geometry.Geometry

放置位置中心點位

<script type="text/javascript" src="scripts/LabelLayer.js"></script>

<script type="text/javascript" src="scripts/FeatureLayer.js"></script>

<script type="text/javascript" src="scripts/Renderer.js"></script>

<script type="text/javascript" src="scripts/Symbol.js"></script>

//Create a feature layer to be labeled

var featureLayer = new sg.FeatureLayer('agent.aspx', {

               name: 'Countries',

               mode: sg.FeatureLayer.MODE_ONDEMAND

           });

//Create text symbol

var statesLabel = new sg.symbols.TextSymbol().setColor(new sg.Color(20, 20, 128, 0.8));

statesLabel.font.setSize("14pt");

statesLabel.font.setFamily("arial");

var statesLabelRenderer = new sg.renderers.SimpleRenderer(statesLabel);

//Label the feature layer using field name "admin"

var labelField = "admin";

var labelLayer = new sg.layers.LabelLayer();

labelLayer.addFeatureLayer(featureLayer, statesLabelRenderer, "${" + labelField + "}");