Example - Creating A Layer That Uses Area Rules

This example shows how to create a new layer using the factory. This layer uses three area rules to theme parcels by their square footage.

    // ...
  /---------------------------------------------------//
 $factory = new LayerDefinitionFactory();
 
 /// Create three area rules for three different
 // scale ranges.    
 $areaRule1 = $factory->CreateAreaRule(    '1 to 800', 
   'SQFT >= 1 AND SQFT < 800',     'FFFFFF00');
 $areaRule2 = $factory->CreateAreaRule( '800 to 1600', 
   'SQFT >= 800 AND SQFT < 1600',  'FFFFBF20');
 $areaRule3 = $factory->CreateAreaRule('1600 to 2400', 
   'SQFT >= 1600 AND SQFT < 2400', 'FFFF8040');
 
 // Create an area type style.   
 $areaTypeStyle = $factory->CreateAreaTypeStyle(
   $areaRule1 . $areaRule2 . $areaRule3);
 
 // Create a scale range.
 $minScale = '0';
 $maxScale = '1000000000000';
 $areaScaleRange = $factory->CreateScaleRange(
   $minScale, $maxScale, $areaTypeStyle);
 // Create the layer definiton.
 $featureClass = 'Library://Samples/Sheboygan/Data/'
 .  'Parcels.FeatureSource';
 $featureName = 'SHP_Schema:Parcels';
 $geometry = 'SHPGEOM';
 $layerDefinition = $factory->CreateLayerDefinition(
   $featureClass, $featureName, $geometry, 
   $areaScaleRange);
 
 //---------------------------------------------------//
 // ...

The script then saves the XML to a resource and loads that resource into the map. See Adding Layers To A Map.