ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / LasPointDisplayFilter Class / Returns Property
Example

In This Topic
    Returns Property (LasPointDisplayFilter)
    In This Topic
    Gets and sets the list of returns. Default value is null.
    Syntax
    public List<LasReturnType> Returns {get; set;}
    Public Property Returns As List(Of LasReturnType)
    Remarks
    A null or an empty list of return values means that all return values participate in the filter.
    Example
    Get and Set Display Filter
    // get the current display filter
    LasPointDisplayFilter ptFilter = lasDatasetLayer.GetDisplayFilter();
    
    
    // display only ground points
    lasDatasetLayer.SetDisplayFilter(LasPointDisplayFilterType.Ground);
    
    // display first return points
    lasDatasetLayer.SetDisplayFilter(LasPointDisplayFilterType.FirstReturnPoints);
    
    // set display filter to a set of classification codes
    List<int> classifications = new List<int>() { 4, 5, 7, 10 };
    lasDatasetLayer.SetDisplayFilter(classifications);
    
    // set display filter to a set of returns
    List<ArcGIS.Core.Data.Analyst3D.LasReturnType> returns = new List<ArcGIS.Core.Data.Analyst3D.LasReturnType>()
            { ArcGIS.Core.Data.Analyst3D.LasReturnType.ReturnFirstOfMany};
    lasDatasetLayer.SetDisplayFilter(returns);
    
    // set up a display filter
    var newDisplayFilter = new LasPointDisplayFilter();
    newDisplayFilter.Returns = new List<ArcGIS.Core.Data.Analyst3D.LasReturnType>()
            { ArcGIS.Core.Data.Analyst3D.LasReturnType.ReturnFirstOfMany, ArcGIS.Core.Data.Analyst3D.LasReturnType.ReturnLastOfMany};
    newDisplayFilter.ClassCodes = new List<int>() { 2, 4 };
    newDisplayFilter.KeyPoints = true;
    newDisplayFilter.WithheldPoints = false;
    newDisplayFilter.SyntheticPoints = false;
    newDisplayFilter.NotFlagged = false;
    lasDatasetLayer.SetDisplayFilter(returns);
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.2 or higher.
    See Also