public static IRasterFunctionTemplate CreateNDVICustomTemplate(string bandIndices)
{
#region Setup Raster Function Vars
IRasterFunctionVariable watermarkRasterRFV = new RasterFunctionVariableClass();
watermarkRasterRFV.Name = "Raster";
watermarkRasterRFV.IsDataset = true;
IRasterFunctionVariable bandIndicesRFV = new RasterFunctionVariableClass();
bandIndicesRFV.Name = "BandIndices";
bandIndicesRFV.Value = bandIndices;
bandIndicesRFV.IsDataset = false;
#endregion
#region Setup Raster Function Template
// Create the NDVI Custom Function Arguments object
IRasterFunctionArguments rasterFunctionArguments = new CustomFunction.NDVICustomFunctionArguments();
// Set the Band Indices
rasterFunctionArguments.PutValue("BandIndices", bandIndicesRFV);
// Set the Raster Dataset as the input raster
rasterFunctionArguments.PutValue("Raster", watermarkRasterRFV);
// Create the NDVI Custom Function
IRasterFunction ndviCustomFunction = new CustomFunction.NDVICustomFunction();
IRasterFunctionTemplate ndviCustomFunctionTemplate = new RasterFunctionTemplateClass();
ndviCustomFunctionTemplate.Function = ndviCustomFunction;
ndviCustomFunctionTemplate.Arguments = rasterFunctionArguments;
#endregion
return(ndviCustomFunctionTemplate);
}
public static bool AddNDVICustomDataToMD(string MDWorkspaceFolder, string MDName,
string bandIndices, bool clearFunctions)
{
try
{
// Open MD
Type factoryType = Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory");
IWorkspaceFactory mdWorkspaceFactory = (IWorkspaceFactory)Activator.CreateInstance(factoryType);
IWorkspace mdWorkspace = mdWorkspaceFactory.OpenFromFile(MDWorkspaceFolder, 0);
IRasterWorkspaceEx workspaceEx = (IRasterWorkspaceEx)(mdWorkspace);
IMosaicDataset mosaicDataset = (IMosaicDataset)workspaceEx.OpenRasterDataset(
MDName);
if (clearFunctions) // Clear functions already added to MD.
mosaicDataset.ClearFunction();
// Create NDVI Custom Function
IRasterFunction rasterFunction = new CustomFunction.NDVICustomFunction();
// Create the NDVI Custom Function Arguments object
INDVICustomFunctionArguments rasterFunctionArguments = new NDVICustomFunctionArguments();
// Set the Band Indices
rasterFunctionArguments.BandIndices = bandIndices;
// Add function to MD.
// This function takes the name of the property corresponding to the Raster
// property of the Arguments object (in this case is it called Raster itself:
// rasterFunctionArguments.Raster) as its third argument.
mosaicDataset.ApplyFunction(rasterFunction, rasterFunctionArguments, "Raster");
Console.WriteLine("Added NDVI Custom Function to MD: " + MDName + ".");
Console.WriteLine("Success.");
return true;
}
catch (Exception exc)
{
Console.WriteLine("Exception Caught while adding NDVI Custom Function to MD: " + exc.Message);
Console.WriteLine("Failed.");
return false;
}
}
public static IRasterFunctionTemplate CreateNDVICustomTemplate(string bandIndices)
{
#region Setup Raster Function Vars
IRasterFunctionVariable watermarkRasterRFV = new RasterFunctionVariableClass();
watermarkRasterRFV.Name = "Raster";
watermarkRasterRFV.IsDataset = true;
IRasterFunctionVariable bandIndicesRFV = new RasterFunctionVariableClass();
bandIndicesRFV.Name = "BandIndices";
bandIndicesRFV.Value = bandIndices;
bandIndicesRFV.IsDataset = false;
#endregion
#region Setup Raster Function Template
// Create the NDVI Custom Function Arguments object
IRasterFunctionArguments rasterFunctionArguments = new CustomFunction.NDVICustomFunctionArguments();
// Set the Band Indices
rasterFunctionArguments.PutValue("BandIndices", bandIndicesRFV);
// Set the Raster Dataset as the input raster
rasterFunctionArguments.PutValue("Raster", watermarkRasterRFV);
// Create the NDVI Custom Function
IRasterFunction ndviCustomFunction = new CustomFunction.NDVICustomFunction();
IRasterFunctionTemplate ndviCustomFunctionTemplate = new RasterFunctionTemplateClass();
ndviCustomFunctionTemplate.Function = ndviCustomFunction;
ndviCustomFunctionTemplate.Arguments = rasterFunctionArguments;
#endregion
return ndviCustomFunctionTemplate;
}
public static bool AddNDVICustomToRD(IRasterDataset RasterDataset, string OutputFolder, string OutputName,
string bandIndices)
{
try
{
// Create NDVI Custom Function
IRasterFunction rasterFunction = new CustomFunction.NDVICustomFunction();
// Create the NDVI Custom Function Arguments object
INDVICustomFunctionArguments rasterFunctionArguments = new NDVICustomFunctionArguments();
// Set the Band Indices
rasterFunctionArguments.BandIndices = bandIndices;
// Set the RasterDataset as the input raster
rasterFunctionArguments.Raster = RasterDataset;
// Create Function Dataset
IFunctionRasterDataset functionRasterDataset = new FunctionRasterDataset();
// Create a Function Raster Dataset Name object
IFunctionRasterDatasetName functionRasterDatasetName =
(IFunctionRasterDatasetName)new FunctionRasterDatasetName();
// Set the path for the output Function Raster Dataset
functionRasterDatasetName.FullName = System.IO.Path.Combine(OutputFolder, OutputName);
functionRasterDataset.FullName = (IName)functionRasterDatasetName;
// Initialize the Function Raster Dataset with the function and
// its arguments object
functionRasterDataset.Init(rasterFunction, rasterFunctionArguments);
// Save as Function Raster Dataset as an .afr file
ITemporaryDataset myTempDset = (ITemporaryDataset)functionRasterDataset;
myTempDset.MakePermanent();
Console.WriteLine("Generated " + OutputName + ".");
Console.WriteLine("Success.");
return true;
}
catch (Exception exc)
{
Console.WriteLine("Exception Caught while adding NDVI Custom Function to Raster Dataset: " + exc.Message);
Console.WriteLine("Failed.");
return false;
}
}