Problem defining scale in LabelClass

Question

I have my labelClass defined as this:

HUClabelClass = new LabelClass({
 labelExpressionInfo: {
 "value": '{HU_8_Name}',
 "maxScale": 250000
 }, 
 symbol: mySymbols.hucLabelSymbol() //MySymbols holds all the symbology for my project.  
 });

HUClayer.setLabelingInfo([ HUClabelClass ]);

I'm a little lost where I should place the maxScale parameter.  It have placed it within the labelExpressionInfo and outside of it.  I've tried quoting it, and leaving it without.

No matter what combination I try, my labels draw at all scales and that's not what I want to happpen.

rscheitlin · Answer

Tracy, I can get the maxScale to work with this sample. Just zoom into Rhode Island and see the label turn off: <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no"> <title>Labeling features client-side</title> <link rel="stylesheet" href="https://js.arcgis.com/3.20/esri/css/esri.css"> <style> html, body, #map { height: 100%; width: 100%; margin: 0; padding: 0; } </style> <script src="https://js.arcgis.com/3.20/"></script> <script> var map; require([ "esri/map", "esri/geometry/Extent", "esri/layers/FeatureLayer", "esri/symbols/SimpleLineSymbol", "esri/symbols/SimpleFillSymbol", "esri/symbols/TextSymbol", "esri/renderers/SimpleRenderer", "esri/layers/LabelClass", "esri/Color", "dojo/domReady!" ], function(Map, Extent, FeatureLayer, SimpleLineSymbol, SimpleFillSymbol, TextSymbol, SimpleRenderer, LabelClass, Color) { // load the map centered on the United States var bbox = new Extent({"xmin": -1940058, "ymin": -814715, "xmax": 1683105, "ymax": 1446096, "spatialReference": {"wkid": 102003}}); //create the map and set the extent, making sure to "showLabels" map = new Map("map", { extent: bbox, showLabels : true //very important that this must be set to true! }); // create a renderer for the states layer to override default symbology var statesColor = new Color("#666"); var statesLine = new SimpleLineSymbol("solid", statesColor, 1.5); var statesSymbol = new SimpleFillSymbol("solid", statesLine, null); var statesRenderer = new SimpleRenderer(statesSymbol); // create the feature layer to render and label var statesUrl = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3"; var states = new FeatureLayer(statesUrl, { id: "states", outFields: ["*"] }); states.setRenderer(statesRenderer); // create a text symbol to define the style of labels var statesLabel = new TextSymbol().setColor(statesColor); statesLabel.font.setSize("14pt"); statesLabel.font.setFamily("arial"); //this is the very least of what should be set within the JSON var json = { "labelExpressionInfo": {"value": "{STATE_NAME}"}, "maxScale": 900000 }; //create instance of LabelClass (note: multiple LabelClasses can be passed in as an array) var labelClass = new LabelClass(json); labelClass.symbol = statesLabel; // symbol also can be set in LabelClass' json states.setLabelingInfo([ labelClass ]); map.addLayer(states); }); </script> </head> <body> <div id="map"></div> </body> </html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍