﻿ DropMs Method (GeometryEngine)—ArcGIS Pro
ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Geometry Namespace / GeometryEngine Class / DropMs Method
The input geometry.
Example

In This Topic
DropMs Method (GeometryEngine)
In This Topic
Sets all the M-values to NaN.
Syntax
```public Geometry DropMs(
Geometry geometry
)```
```Public Function DropMs( _
ByVal geometry As Geometry _
) As Geometry```

#### Parameters

geometry
The input geometry.

#### Return Value

The geometry with the M-values set to NaN. If the geometry is empty or the spatial reference is null, then the input geometry is returned unchanged.
Exceptions
ExceptionDescription
Geometry is null.
This geometry is not M-Aware.
The method is not implemeted for GeometryBag.
Example
Set all the M-values to NaN - DropMs
```string json = "{\"hasM\":true,\"paths\":[[[-4,2,1],[-4,5,2],[-2,5,3],[-2,7,4],[2,7,5]],[[4,1,-1],[2,1,-2],[2,-2,-3],[-3,-2,-4],[-3,0,-5]]]}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.DropMs(polyline) as Polyline;
// outputPolyline.HasM = true. Every M-value is NaN.
// outputPolyline.ToJson() = {"hasM":true,"paths":[[[-4,2,null],[-4,5,null],[-2,5,null],[-2,7,null],[2,7,null]],[[4,1,-null],[2,1,null],[2,-2,null],[-3,-2,null],[-3,0,null]]]}
```
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.3 or higher.