ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMMaplexLabelPlacementProperties Class
Members Example

In This Topic
    CIMMaplexLabelPlacementProperties Class
    In This Topic
    Represents Maplex label placement properties.
    Object Model
    CIMMaplexLabelPlacementProperties ClassCIMExpressionInfo ClassCIMMaplexLabelPlacementProperties ClassCIMMaplexLabelPlacementProperties ClassCIMMaplexLabelStackingProperties ClassCIMMaplexOffsetAlongLineProperties ClassCIMMaplexExternalZonePriorities ClassCIMMaplexExternalZonePriorities ClassCIMMaplexInternalZonePriorities ClassCIMMaplexRotationProperties ClassCIMMaplexStrategyPriorities Class
    Syntax
    Example
    Creating an annotation feature class
    public void CreateStandAloneAnnotationFeatureClass(Geodatabase geodatabase, SpatialReference spatialReference)
    {
      // Creating a Cities annotation feature class
      // with following user defined fields
      // Name 
      // GlobalID
    
      // Annotation feature class name
      string annotationFeatureClassName = "CitiesAnnotation";
    
      // Create user defined attribute fields for annotation feature class 
      FieldDescription globalIDFieldDescription = FieldDescription.CreateGlobalIDField();
      FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255);
    
      // Create a list of all field descriptions
      List<FieldDescription> fieldDescriptions = new List<FieldDescription> { globalIDFieldDescription, nameFieldDescription };
    
      // Create a ShapeDescription object
      ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Polygon, spatialReference);
    
      // Create general placement properties for Maplex engine 
      CIMMaplexGeneralPlacementProperties generalPlacementProperties =
        new CIMMaplexGeneralPlacementProperties
        {
          AllowBorderOverlap = true,
          PlacementQuality = MaplexQualityType.High,
          DrawUnplacedLabels = true,
          InvertedLabelTolerance = 1.0,
          RotateLabelWithDisplay = true,
          UnplacedLabelColor = new CIMRGBColor
          {
            R = 0,
            G = 255,
            B = 0,
            Alpha = 0.5f // Green
          }
        };
    
      // Create general placement properties for Standard engine
    
      //CIMStandardGeneralPlacementProperties generalPlacementProperties =
      //  new CIMStandardGeneralPlacementProperties
      //  {
      //    DrawUnplacedLabels = true,
      //    InvertedLabelTolerance = 3.0,
      //    RotateLabelWithDisplay = true,
      //    UnplacedLabelColor = new CIMRGBColor
      //    {
      //      R = 255, G = 0, B = 0, Alpha = 0.5f // Red
      //    } 
      //   };
    
    
      // Create annotation  label classes
      // Green label
      CIMLabelClass greenLabelClass = new CIMLabelClass
      {
        Name = "Green",
        ExpressionTitle = "Expression-Green",
        ExpressionEngine = LabelExpressionEngine.Arcade,
        Expression = "$feature.OBJECTID",
        ID = 1,
        Priority = 0,
        Visibility = true,
        TextSymbol = new CIMSymbolReference
        {
          Symbol = new CIMTextSymbol()
          {
            Angle = 45,
            FontType = FontType.Type1,
            FontFamilyName = "Tahoma",
            FontEffects = FontEffects.Normal,
            HaloSize = 2.0,
    
            Symbol = new CIMPolygonSymbol
            {
              SymbolLayers = new CIMSymbolLayer[]
              {
                new CIMSolidFill
                {
                  Color = CIMColor.CreateRGBColor(0, 255, 0)
                }
              },
              UseRealWorldSymbolSizes = true
            }
          },
          MaxScale = 0,
          MinScale = 0,
          SymbolName = "TextSymbol-Green"
        },
        StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties
        {
          AllowOverlappingLabels = true,
          LineOffset = 1.0
        },
        MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties
        {
          AlignLabelToLineDirection = true,
          AvoidPolygonHoles = true
        }
      };
    
      // Blue label
      CIMLabelClass blueLabelClass = new CIMLabelClass
      {
        Name = "Blue",
        ExpressionTitle = "Expression-Blue",
        ExpressionEngine = LabelExpressionEngine.Arcade,
        Expression = "$feature.OBJECTID",
        ID = 2,
        Priority = 0,
        Visibility = true,
        TextSymbol = new CIMSymbolReference
        {
          Symbol = new CIMTextSymbol()
          {
            Angle = 45,
            FontType = FontType.Type1,
            FontFamilyName = "Consolas",
            FontEffects = FontEffects.Normal,
            HaloSize = 2.0,
    
            Symbol = new CIMPolygonSymbol
            {
              SymbolLayers = new CIMSymbolLayer[]
              {
                new CIMSolidFill
                {
                  Color = CIMColor.CreateRGBColor(0, 0, 255)
                }
              },
              UseRealWorldSymbolSizes = true
            }
          },
          MaxScale = 0,
          MinScale = 0,
          SymbolName = "TextSymbol-Blue"
        },
        StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties
        {
          AllowOverlappingLabels = true,
          LineOffset = 1.0
        },
        MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties
        {
          AlignLabelToLineDirection = true,
          AvoidPolygonHoles = true
        }
      };
    
      // Create a list of labels
      List<CIMLabelClass> labelClasses = new List<CIMLabelClass> { greenLabelClass, blueLabelClass };
    
      // Create an annotation feature class description object to describe the feature class to create
      AnnotationFeatureClassDescription annotationFeatureClassDescription =
        new AnnotationFeatureClassDescription(annotationFeatureClassName, fieldDescriptions, shapeDescription,
          generalPlacementProperties, labelClasses)
        {
          IsAutoCreate = true,
          IsSymbolIDRequired = false,
          IsUpdatedOnShapeChange = true
        };
    
      // Create a SchemaBuilder object
      SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);
    
      // Add the creation of the Cities annotation feature class to the list of DDL tasks
      schemaBuilder.Create(annotationFeatureClassDescription);
    
      // Execute the DDL
      bool success = schemaBuilder.Build();
    
      // Inspect error messages
      if (!success)
      {
        IReadOnlyList<string> errorMessages = schemaBuilder.ErrorMessages;
        //etc.
      }
    }
    Creating a feature-linked annotation feature class
    public void CreateFeatureLinkedAnnotationFeatureClass(Geodatabase geodatabase, SpatialReference spatialReference)
    {
      // Creating a feature-linked annotation feature class between water pipe and valve in water distribution network
      // with following user defined fields
      // PipeName 
      // GlobalID
    
      // Annotation feature class name
      string annotationFeatureClassName = "WaterPipeAnnotation";
    
      // Create user defined attribute fields for annotation feature class
      FieldDescription pipeGlobalID = FieldDescription.CreateGlobalIDField();
      FieldDescription nameFieldDescription = FieldDescription.CreateStringField("Name", 255);
    
      // Create a list of all field descriptions
      List<FieldDescription> fieldDescriptions = new List<FieldDescription> { pipeGlobalID, nameFieldDescription };
    
      // Create a ShapeDescription object
      ShapeDescription shapeDescription = new ShapeDescription(GeometryType.Polygon, spatialReference);
    
      // Create general placement properties for Maplex engine 
      CIMMaplexGeneralPlacementProperties generalPlacementProperties = new CIMMaplexGeneralPlacementProperties
      {
        AllowBorderOverlap = true,
        PlacementQuality = MaplexQualityType.High,
        DrawUnplacedLabels = true,
        InvertedLabelTolerance = 1.0,
        RotateLabelWithDisplay = true,
        UnplacedLabelColor = new CIMRGBColor
        {
          R = 255,
          G = 0,
          B = 0,
          Alpha = 0.5f
        }
      };
    
      // Create annotation  label classes
      // Green label
      CIMLabelClass greenLabelClass = new CIMLabelClass
      {
        Name = "Green",
        ExpressionTitle = "Expression-Green",
        ExpressionEngine = LabelExpressionEngine.Arcade,
        Expression = "$feature.OBJECTID",
        ID = 1,
        Priority = 0,
        Visibility = true,
        TextSymbol = new CIMSymbolReference
        {
          Symbol = new CIMTextSymbol()
          {
            Angle = 45,
            FontType = FontType.Type1,
            FontFamilyName = "Tahoma",
            FontEffects = FontEffects.Normal,
            HaloSize = 2.0,
    
            Symbol = new CIMPolygonSymbol
            {
              SymbolLayers = new CIMSymbolLayer[]
              {
                new CIMSolidFill
                {
                  Color = CIMColor.CreateRGBColor(0, 255, 0)
                }
              },
              UseRealWorldSymbolSizes = true
            }
          },
          MaxScale = 0,
          MinScale = 0,
          SymbolName = "TextSymbol-Green"
        },
        StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties
        {
          AllowOverlappingLabels = true,
          LineOffset = 1.0
        },
        MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties
        {
          AlignLabelToLineDirection = true,
          AvoidPolygonHoles = true
        }
      };
    
      // Blue label
      CIMLabelClass blueLabelClass = new CIMLabelClass
      {
        Name = "Blue",
        ExpressionTitle = "Expression-Blue",
        ExpressionEngine = LabelExpressionEngine.Arcade,
        Expression = "$feature.OBJECTID",
        ID = 2,
        Priority = 0,
        Visibility = true,
        TextSymbol = new CIMSymbolReference
        {
          Symbol = new CIMTextSymbol()
          {
            Angle = 45,
            FontType = FontType.Type1,
            FontFamilyName = "Consolas",
            FontEffects = FontEffects.Normal,
            HaloSize = 2.0,
    
            Symbol = new CIMPolygonSymbol
            {
              SymbolLayers = new CIMSymbolLayer[]
              {
                new CIMSolidFill
                {
                  Color = CIMColor.CreateRGBColor(0, 0, 255)
                }
              },
              UseRealWorldSymbolSizes = true
            }
          },
          MaxScale = 0,
          MinScale = 0,
          SymbolName = "TextSymbol-Blue"
        },
        StandardLabelPlacementProperties = new CIMStandardLabelPlacementProperties
        {
          AllowOverlappingLabels = true,
          LineOffset = 1.0
        },
        MaplexLabelPlacementProperties = new CIMMaplexLabelPlacementProperties
        {
          AlignLabelToLineDirection = true,
          AvoidPolygonHoles = true
        }
      };
    
      // Create a list of labels
      List<CIMLabelClass> labelClasses = new List<CIMLabelClass> { greenLabelClass, blueLabelClass };
    
    
      // Create linked feature description
      // Linked feature class name
      string linkedFeatureClassName = "WaterPipe";
    
      // Create fields for water pipe
      FieldDescription waterPipeGlobalID = FieldDescription.CreateGlobalIDField();
      FieldDescription pipeName = FieldDescription.CreateStringField("PipeName", 255);
    
      // Create a list of water pipe field descriptions
      List<FieldDescription> pipeFieldDescriptions = new List<FieldDescription> { waterPipeGlobalID, pipeName };
    
      // Create a linked feature class description
      FeatureClassDescription linkedFeatureClassDescription = new FeatureClassDescription(linkedFeatureClassName, pipeFieldDescriptions,
        new ShapeDescription(GeometryType.Polyline, spatialReference));
    
      // Create a SchemaBuilder object
      SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);
    
      // Add the creation of the linked feature class to the list of DDL tasks
      FeatureClassToken linkedFeatureClassToken = schemaBuilder.Create(linkedFeatureClassDescription);
    
      // Create an annotation feature class description object to describe the feature class to create
      AnnotationFeatureClassDescription annotationFeatureClassDescription =
        new AnnotationFeatureClassDescription(annotationFeatureClassName, fieldDescriptions, shapeDescription,
          generalPlacementProperties, labelClasses, new FeatureClassDescription(linkedFeatureClassToken))
        {
          IsAutoCreate = true,
          IsSymbolIDRequired = false,
          IsUpdatedOnShapeChange = true
        };
    
      // Add the creation of the annotation feature class to the list of DDL tasks
      schemaBuilder.Create(annotationFeatureClassDescription);
    
      // Execute the DDL
      bool success = schemaBuilder.Build();
    
      // Inspect error messages
      if (!success)
      {
        IReadOnlyList<string> errorMessages = schemaBuilder.ErrorMessages;
        //etc.
      }
    }
    Inheritance Hierarchy

    System.Object
       ArcGIS.Core.CIM.CIMObject
          ArcGIS.Core.CIM.CIMLabelPlacementProperties
             ArcGIS.Core.CIM.CIMMaplexLabelPlacementProperties

    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.0 or higher.
    See Also