ArcObjects Library Reference (SpatialAnalyst)

IHydrologyOp.Sink Method

Creates a raster identifying all sinks, or areas of internal drainage.

[Visual Basic .NET]
Public Function Sink ( _
    ByVal directionRaster As IGeoDataset _
) As IGeoDataset

[C#]
public IGeoDataset Sink (
    IGeoDataset directionRaster
);

[C++]
HRESULT Sink(
  IGeoDataset* directionRaster
);

[C++]

Parameters
directionRaster [in]

  directionRaster is a parameter of type IGeoDataset*

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Spatial Analyst Extension.

geoDataset

an input Raster, RasterDataset, RasterBand, or RasterDescriptor showing the direction of flow out of each cell

This can be created using the IHydrologyOp::FlowDirection method.

The method returns a reference to a Raster object.
Read the Working with ArcGIS Spatial Analyst objects technical document for general information on implementing Spatial Analyst operations.