ClassifyLasPoints Method

In This Topic

Applies the specified set of classification codes and / or classification flags to the LAS points identified by the LasPointSelectionFilter. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

Visual Basic (Declaration)
C#

Public Function ClassifyLasPoints( _
   ByVal editDescription As LasPointClassificationDescription, _
   ByVal keepSelection As Boolean _
) As Boolean

public bool ClassifyLasPoints( 
   LasPointClassificationDescription editDescription,
   bool keepSelection
)

Parameters

editDescription: The set of classification edits to apply.
keepSelection: A boolean indicating if the current selection is to be kept.

Return Value

A boolean indicating edits have been applied.

Exceptions

Exception	Description
System.ArgumentNullException	editDescription is null.
System.ArgumentException	Invalid arguments are supplied. See CanClassifyLasPoints.
MappingException	An exception occurred within the edit procedure.
System.Exception
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run

Remarks

Use CanClassifyLasPoints to determine if the edit is valid for the layer before applying it.

The changes made are permanent. If you are conducting trial scenarios, or do not want changes to be permanent, work with a copy of the files and not the original data.

Example

Classify LAS Points

// build the LasPointClassificationDescription
// assign a new classification code to be assigned to the selected LAS points
// don't alter any of the classification flags
var edits = new LasPointClassificationDescription();
edits.ClassCode = 6;

if (lasDatasetLayer.CanClassifyLasPoints(edits))
  lasDatasetLayer.ClassifyLasPoints(edits, true);


// alternatively set up the LasPointClassificationDescription to modify classification flags
var edits2 = new LasPointClassificationDescription();
edits2.KeyPoints = LasClassFlagEditType.Set;
edits2.SyntheticPoints = LasClassFlagEditType.Clear;
// don't change the OverlapPoints, WithheldPoints flags

// apply the edit
if (lasDatasetLayer.CanClassifyLasPoints(edits2))
  lasDatasetLayer.ClassifyLasPoints(edits2, true);



// or perform both a classification code and classification flag edit
var edits3 = new LasPointClassificationDescription();
edits3.ClassCode = 5;
edits3.KeyPoints = LasClassFlagEditType.Set;
edits3.SyntheticPoints = LasClassFlagEditType.Clear;
// be explicit about not changing the other flags
edits3.WithheldPoints = LasClassFlagEditType.NoChange;
edits3.OverlapPoints = LasClassFlagEditType.NoChange;

// apply the edit
if (lasDatasetLayer.CanClassifyLasPoints(edits3))
  lasDatasetLayer.ClassifyLasPoints(edits3, true);

Requirements

Target Platforms: Windows 11 Home, Pro, Enterprise (64 bit)

ArcGIS Pro version: 3.7 or higher.

Reference

LasDatasetLayer Class
LasDatasetLayer Members

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