Custom labeling annotation on web map

JieCai — Mon, 01 Feb 2016 18:13:47 GMT

I have a problem to display the calculated property value in javascript api label object. If anybody knows how to solve this issue, could you share your idea? Thanks!

Here is code:

// create a renderer for the FNP layer to override default symbology

var FNPColor = new Color("#666");

var FNPColor = new Color("#FF0000");

var FNPLine = new SimpleLineSymbol("solid", FNPColor, 1.5);

var FNPSymbol = new SimpleFillSymbol("solid", FNPLine, null);

var FNPRenderer = new SimpleRenderer(FNPSymbol);

var FNPlayer = new FeatureLayer("https://oursite/webgis/rest/services/Cooperators/cooperatorboundaryandpond/FeatureServer/1", {

mode: FeatureLayer.MODE_SELECTION,

outFields: ["*"],

});


			// create a text symbol to define the style of labels

var FNPLabel = new TextSymbol().setColor(FNPColor);

FNPLabel.font.setSize("8pt");

FNPLabel.font.setFamily("arial");

var json = {

"labelExpressionInfo": [{ "value": "{Name}" },{"Value"}:calculateAcreageFNP}] // Here is the value need be displayed in the label

"labelPlacement": "above-right"

};

var labelClass = new LabelClass(json);

labelClass.symbol = FNPLabel; // symbol also can be set in LabelClass' json

FNPlayer.setLabelingInfo([labelClass]);


			function calculateAcreageFNP(value) {

var sqft = geometryEngine.geodesicArea(value.geometry, "square-feet");

console.log(sqft);

var squarefeet = number.format(sqft, { places: 1 });

var acres = number.format(sqft / 43560, { places: 2 });

return "Acres :" + acres ;

};

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Custom labeling annotation on web map