ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMStandardLabelPlacementProperties Class / LineOffset Property
Example

In This Topic
    LineOffset Property
    In This Topic
    Gets or sets the line offset.
    Syntax
    public double LineOffset {get; set;}
    Public Property LineOffset As Double
    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.
      }
    }
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also