InterpolateMsBetween Method (IGeometryEngine)

In This Topic

Generates M-values by linear interpolation over a range of points.

Syntax

C#
Visual Basic (Declaration)

Multipart InterpolateMsBetween( 
   Multipart multipart,
   int fromPart,
   int fromPoint,
   int toPart,
   int toPoint
)

Function InterpolateMsBetween( _
   ByVal multipart As Multipart, _
   ByVal fromPart As Integer, _
   ByVal fromPoint As Integer, _
   ByVal toPart As Integer, _
   ByVal toPoint As Integer _
) As Multipart

Parameters

multipart: The multipart to copy and update.
fromPart: The index of the part to start from.
fromPoint: The index of the point to start from. The point index is relative to the part.
toPart: The index of the part to end with.
toPoint: The index of the point to end with. The point index is relative to the part.

Return Value

An updated version of the input multipart.

Exceptions

Exception	Description
System.ArgumentNullException	The input multipart is null.
System.InvalidOperationException	The input multipart is not M-Aware.
ArcGIS.Core.Geometry.Exceptions.InvalidParameterException	M-values cannot be interpolated.

Example

Generates M-values by linear interpolation over a range of points - InterpolateMsBetween

string json = "{\"hasM\":true,\"paths\":[[[0,0,-1],[1,0,0],[1,1,1],[1,2,2],[3,1,3],[5,3,4],[9,5,5],[7,6,6]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);

// Interpolate between points 2 and 6
Polyline outPolyline = GeometryEngine.Instance.InterpolateMsBetween(polyline, 0, 2, 0, 6) as Polyline;
// The points of the output polyline are
// (0, 0, -1), (1, 0, 0), (1, 1, 1), (1, 2, 1.3796279833912741), (3, 1, 2.2285019604153242), (5, 3, 3.3022520459518998), (9, 5, 5), (7, 6, 6)

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members

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