Opening a terrain dataset
This topic shows how to get a reference to a terrain dataset from a feature workspace:
- Obtain a handle to the feature workspace containing the terrain dataset. See the following code example:
// Get a feature workspace that contains a terrain.
IWorkspaceFactory WSFact=new FileGDBWorkspaceFactoryClass();
IFeatureWorkspace FWS;
FWS=WSFact.OpenFromFile("C:\\project\\terrain.gdb", 0)as IFeatureWorkspace;
' Get a feature workspace that contains a terrain.
Dim WSFact As IWorkspaceFactory=New FileGDBWorkspaceFactoryClass()
Dim FWS As IFeatureWorkspace
FWS=TryCast(WSFact.OpenFromFile("C:\project\terrain.gdb", 0), IFeatureWorkspace)
- Get the feature dataset inside the workspace that contains the terrain dataset. See the following code example:
// From the workspace, get a feature dataset that contains a terrain.
IFeatureDataset FDS=FWS.OpenFeatureDataset("myFDS");
' From the workspace, get a feature dataset that contains a terrain.
Dim FDS As IFeatureDataset=FWS.OpenFeatureDataset("myFDS")
- From the feature dataset, open the terrain. See the following code example:
// Open the terrain.
IFeatureDatasetExtensionContainer EC=FDS as IFeatureDatasetExtensionContainer;
IDatasetContainer3 DC=EC.FindExtension(esriDatasetType.esriDTTerrain)as
IDatasetContainer3;
ITerrain Terrain=DC.get_DatasetByName(esriDatasetType.esriDTTerrain, "myTerrain")
as ITerrain;
' Open the terrain.
Dim EC As IFeatureDatasetExtensionContainer=TryCast(FDS, IFeatureDatasetExtensionContainer)
Dim DC As IDatasetContainer3=TryCast(EC.FindExtension(esriDatasetType.esriDTTerrain), IDatasetContainer3)
Dim Terrain As ITerrain=TryCast(DC.get_DatasetByName(esriDatasetType.esriDTTerrain, "myTerrain"), ITerrain)
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):
| Development licensing | Deployment licensing |
|---|---|
| ArcGIS Desktop Basic | ArcGIS Desktop Basic |
| ArcGIS Desktop Standard | ArcGIS Desktop Standard |
| ArcGIS Desktop Advanced | ArcGIS Desktop Advanced |
| Engine Developer Kit | Engine |