GeoAnalyst

• Engine with 3D Analyst
• Engine with Spatial Analyst
• ArcGIS for Desktop Basic with 3D Analyst
• ArcGIS for Desktop Basic with Spatial Analyst
• ArcGIS for Desktop Standard with 3D Analyst
• ArcGIS for Desktop Standard with Spatial Analyst
• ArcGIS for Desktop Advanced with 3D Analyst
• ArcGIS for Desktop Advanced with Spatial Analyst
• Server with 3D Analyst
• Server with Spatial Analyst

1. Obtaining a 3D Analyst or Spatial Analyst extension license
2. Setting the analysis environment
3. Accessing the input data
4. Performing an operation
5. Using the output

• Enabling the 3D Analyst or Spatial Analyst license
• GeoAnalyst objects

Enabling the 3D Analyst or Spatial Analyst license

Public Function CheckOutSpatialAnalystLicense() As Boolean
    Dim extManagerAdmin As IExtensionManagerAdmin=New ExtensionManager
    
    Dim uid As UID=New UID
    uid.Value="esriGeoAnalyst.SAExtension.1"
    Dim obj As New Object
    extManagerAdmin.AddExtension(uid, obj)
    Dim extManager As IExtensionManager=TryCast(extManagerAdmin, IExtensionManager)
    Dim extConfig As IExtensionConfig
    extConfig=TryCast(extManager.FindExtension(uid), IExtensionConfig)
    extConfig.State=esriExtensionState.esriESEnabled
    CheckOutSpatialAnalystLicense=(extConfig.State=esriExtensionState.esriESEnabled)
End Function

public bool CheckOutSpatialAnalystLicense()
{
    IExtensionManagerAdmin extManagerAdmin=new ExtensionManagerClass();
    UID uid=new UIDClass();
    uid.Value="esriGeoAnalyst.SAExtension.1";
    object obj=new object();
    extManagerAdmin.AddExtension(uid, ref obj);
    IExtensionManager extManager=extManagerAdmin as IExtensionManager;
    IExtensionConfig extConfig=null;
    extConfig=extManager.FindExtension(uid)as IExtensionConfig;
    extConfig.State=esriExtensionState.esriESEnabled;
    return (extConfig.State == esriExtensionState.esriESEnabled);
}

GeoAnalyst objects

Public Function SetNewDefaultEnvironment(ByVal extentEnv As IEnvelope, ByVal cellSize As Double, _
                                         ByVal mask As IGeoDataset, ByVal workspace As IWorkspace, ByVal prj As ISpatialReference) _
                                         As IRasterAnalysisEnvironment
    Try
    ' Create a new RasterAnalysis object and set it as a new default setting.
    Dim rasterAnalysisEnv As IRasterAnalysisEnvironment=New RasterAnalysis
    ' Set the new default extent.
    If Not extentEnv Is Nothing Then
        Dim object_extentEnv As Object=TryCast(extentEnv, Object)
        rasterAnalysisEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, object_extentEnv)
    End If
    ' Set the new default cellsize.
    If cellSize > 0 Then
        Dim object_cellSize As Object=TryCast(cellSize, Object)
        rasterAnalysisEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, object_cellSize)
    End If
    ' Set the new default mask for analysis.
    If Not mask Is Nothing Then
        rasterAnalysisEnv.Mask=mask
    End If
    ' Set the new default output workspace.
    If Not workspace Is Nothing Then
        rasterAnalysisEnv.OutWorkspace=workspace
    End If
    ' Set the new default output spatial reference.
    If Not prj Is Nothing Then
        rasterAnalysisEnv.OutSpatialReference=prj
    End If
    ' Set it as the default setting.
    rasterAnalysisEnv.SetAsNewDefaultEnvironment()
    ' Return a reference to the default environment setting.
    SetNewDefaultEnvironment=rasterAnalysisEnv
    Exit Function
    Catch ex As Exception
    SetNewDefaultEnvironment=Nothing
    End Try
End Function

public IRasterAnalysisEnvironment SetNewDefaultEnvironment(IEnvelope extentEnv,
    double cellSize, IGeoDataset mask, IWorkspace workspace, ISpatialReference prj)
{
    IRasterAnalysisEnvironment tempSetNewDefaultEnvironment=null;
    try
    {
        // Create a new RasterAnalysis object and set it as a new default setting.
        IRasterAnalysisEnvironment rasterAnalysisEnv=new RasterAnalysis();
        // Set the new default extent.
        if (extentEnv != null)
        {
            object object_extentEnv=extentEnv as object;
            object object_Missing=Type.Missing;
            rasterAnalysisEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue,
                ref object_extentEnv, ref object_Missing);
        }
        // Set the new default cellsize.
        if (cellSize > 0)
        {
            object object_cellSize=cellSize as object;
            rasterAnalysisEnv.SetCellSize
                (esriRasterEnvSettingEnum.esriRasterEnvValue, ref object_cellSize);
        }
        // Set the new default mask for analysis.
        if (mask != null)
        {
            rasterAnalysisEnv.Mask=mask;
        }
        // Set the new default output workspace.
        if (workspace != null)
        {
            rasterAnalysisEnv.OutWorkspace=workspace;
        }
        // Set the new default output spatial reference.
        if (prj != null)
        {
            rasterAnalysisEnv.OutSpatialReference=prj;
        }
        // Set it as the default setting.
        rasterAnalysisEnv.SetAsNewDefaultEnvironment();
        // Return a reference to the default environment setting.
        return rasterAnalysisEnv;
    }
    catch (Exception ex)
    {
        tempSetNewDefaultEnvironment=null;
    }
    return tempSetNewDefaultEnvironment;
}

• Clip—Cuts out a rectangular portion of a raster.
• Flip—Flips the raster along the horizontal axis.
• Mirror—Mirrors the raster along the vertical axis.
• Mosaic—Creates one raster from multiple input rasters using a user-selectable method to deal with overlapping areas of the neighboring rasters.
• ProjectFast—Projects a raster to a new spatial reference using the esriGeoAnalysisResampleEnum enumerator, which allows you to pick the nearest, bilinear, or cubic resampling technique.
• Resample—Resamples a raster to a new cell size.
• ReScale—Scales a raster by the specified x and y scale factors.
• Rotate—Rotates a raster around the specified pivot point by an angle specified in degrees.
• Shift—Shifts a raster in the x,y direction by specifying the respective distances.
• Warp—Transforms or rubbersheets a raster along a set of links using a polynomial transformation.

• MakeConstant—Creates a dataset that consists of a single integer or floating point value.
• MakeNormal—Creates a raster of random values from a normal distribution with a mean of 0 and a standard deviation of 1.
• MakeRandom—Creates a raster that consists of random numbers between 0 and 1 with the choice of specifying an optional seed value

• Lookup—Creates a new raster by looking up values in another field in the table of the input raster.
• Reclass—Reclassifies, or changes, the values in a raster.
• ReclassByASCIIFile—Reclassifies the value of the input cells of a raster by using an ASCII remap file.
• ReclassByRemap—Reclassifies the values of the input cells of a raster by using a remap that is built programmatically.
• Slice—"Slices", or changes, a range of values of the input cells by using the enumerators listed in esriGeoAnalysisSliceEnum, which allow you to choose between an equal area or an equal interval method.

• SetAnnulus—Provides a means for defining the region lying between two concentric circles to be used as a neighborhood.
• SetDefault—Creates a 3 by 3 neighborhood.
• SetIrregular—Sets a neighborhood object, each of whose entries can be turned on or off.
• SetWeight—Sets a neighborhood object each of whose entries can be assigned a weight. It can be used in the PointDensity method associated with the RasterNeighborhood object.

• IDW—Performs an inverse distance weighted interpolation on a point feature data set.
• Krige—Interpolates a surface from a set of points using kriging.
• Spline—Interpolates a surface from a set of points using a minimum curvature spline technique.
• Trend—Performs a trend interpolation on a point dataset.
• Variogram—Similar to Krige except that it allows you to specify additional kriging parameters pertaining to the semivariogram. This is done through the GeoAnalysisSemiVariogram coclass.

• Aspect—Identifies the direction of flow and maximum rate of change in z value from each cell.
• Contour—Creates contours or isolines from a raster surface.
• ContourAsPolyline—Creates a contour or isoline that passes through a specified point on a surface.
• ContourList—Creates contours or isolines based on a list of contour values.
• ContoursAsPolylines—Creates contours or isolines that pass through specified points on a surface.
• Curvature—Calculates the curvature of a surface at each cell center. From an applied viewpoint, output of the Curvature method can be used to describe the physical characteristics of a drainage basin in an effort to understand erosion and runoff processes. The profile curvature affects the acceleration and deceleration of flow, thereby influencing erosion and deposition. The planform curvature influences convergence and divergence of flow.
• CutFill—Creates output with volume information describing surface changes after a cut-and-fill operation.
• HillShade—Creates a shaded relief raster from a raster by considering the illumination angle and shadows.
• Slope—Identifies the rate of maximum change in z value from each cell and affects the overall rate of movement downslope. 
• Visibility—Performs visibility analysis on a raster by determining how many observation points can be seen from each cell location of the input raster, or which cell locations can be seen by each observation point.