GetPointByID(Double,Geometry) Method

In This Topic

Gets the points specified by the point ID. Because the LAS dataset can reference multiple LAS files, more than one point with the specified point ID can be found. If a geometry is specified, then only this spatial area is searched. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public IReadOnlyList<LasPoint> GetPointByID( 
   double pointID,
   Geometry geometry
)

Public Overloads Function GetPointByID( _
   ByVal pointID As Double, _
   Optional ByVal geometry As Geometry _
) As IReadOnlyList(Of LasPoint)

Parameters

pointID: The ID of the point to get.
geometry: The area to search. Default value is null. The geometry, if specified, must be a ArcGIS.Core.Geometry.MapPoint or an ArcGIS.Core.Geometry.Envelope.

Return Value

An IReadOnlyList of LasPoint.

Exceptions

Exception	Description
System.ArgumentException	The point ID is invalid or the geometry type is invalid.
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run

Remarks

if is null, then the extent of the dataset is used. The geometry, if specified, must be a ArcGIS.Core.Geometry.MapPoint or an ArcGIS.Core.Geometry.Envelope. It will be projected into the spatial reference of the LAS dataset. The z information on any input geometry is honored.

Example

Access LAS Points by ID

// access by ID
IReadOnlyList<ArcGIS.Core.Data.Analyst3D.LasPoint> pts = lasDataset.GetPointByID(123456);

pts = lasDataset.GetPointByID(123456, envelope);
ArcGIS.Core.Data.Analyst3D.LasPoint pt = pts.FirstOrDefault();

var coords = pt.Coordinate3D;
var mapPoint = pt.ToMapPoint();

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.

Reference

LasDataset Class
LasDataset Members
Overload List

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