How to perform mensuration on an image service

Summary

This topic demonstrates how to perform mensuration on an image service (new at ArcGIS 10.1).

Performing mensuration on an image service

[C#]

public static void Measure(IImageServer4 imageServer)
{
    //Define building bottom.
    IPoint fromPoint=new PointClass();
    fromPoint.X= - 117.29944857;
    fromPoint.Y=34.15586888;
    fromPoint.SpatialReference=imageServer.ServiceInfo.SpatialReference;

    //Define building top.
    IPoint toPoint=new PointClass();
    toPoint.X= - 117.29940048;
    toPoint.Y=34.15589815;
    toPoint.SpatialReference=imageServer.ServiceInfo.SpatialReference;

    //Measure height.
    IImageServerMeasureResult result=imageServer.Measure(fromPoint, toPoint, null,
        null, esriMensurationOperation.esriMensurationHeightFromBaseAndTop);
    Console.WriteLine("{0} +/- {1} {2}", (Double)result.Measurement.GetProperty(
        "Height"), (Double)result.Measurement.GetProperty("HeightUncertainty"), 
        (string)result.Measurement.GetProperty("LinearUnit"));
}

[VB.NET]

Public Shared Sub Measure(ByVal imageServer As IImageServer4)
'Define building bottom.
Dim fromPoint As IPoint=New PointClass()
fromPoint.X=-117.29944857
fromPoint.Y=34.15586888
fromPoint.SpatialReference=imageServer.ServiceInfo.SpatialReference

'Define building top.
Dim toPoint As IPoint=New PointClass()
toPoint.X=-117.29940048
toPoint.Y=34.15589815
toPoint.SpatialReference=imageServer.ServiceInfo.SpatialReference

'Measure height.
Dim result As IImageServerMeasureResult=imageServer.Measure(fromPoint, toPoint, Nothing, Nothing, esriMensurationOperation.esriMensurationHeightFromBaseAndTop)
Console.WriteLine("{0} +/- {1} {2}", DirectCast(result.Measurement.GetProperty("Height"), Double), DirectCast(result.Measurement.GetProperty("HeightUncertainty"), Double), DirectCast(result.Measurement.GetProperty("LinearUnit"), String))
End Sub

See Also:

How to make measurements from images

---

To use the code in this topic, reference the following assemblies in your Visual Studio project. In the code files, you will need using (C#) or Imports (VB .NET) directives for the corresponding namespaces (given in parenthesis below if different from the assembly name):

• ESRI.ArcGIS.Carto
• ESRI.ArcGIS.Server
• ESRI.ArcGIS.System (ESRI.ArcGIS.esriSystem)
• ESRI.ArcGIS.Geometry

Development licensing	Deployment licensing
ArcGIS Desktop Advanced	ArcGIS Desktop Advanced
ArcGIS Desktop Standard	ArcGIS Desktop Standard
ArcGIS Desktop Basic	ArcGIS Desktop Basic
Engine Developer Kit	Engine