ArcGIS Developer Help

ILocalOp.LessThan Method

Calculates the local less-than values between GeoDatasets.

[Visual Basic .NET]
Public Function LessThan ( _
    ByVal ValueData As IGeoDataset, _
    ByVal LocalData As IGeoDataset _
) As IGeoDataset

[C#]
public IGeoDataset LessThan (
    IGeoDataset ValueData,
    IGeoDataset LocalData
);

[C++]
HRESULT LessThan(
  IGeoDataset* ValueData,
  IGeoDataset* LocalData
);

[C++]
Parameters
ValueData [in]

  ValueData is a parameter of type IGeoDataset*
LocalData [in]

  LocalData is a parameter of type IGeoDataset*

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

valueDataset	an input Raster, RasterDataset, RasterBand, or RasterDescriptor defining the value that will be used to determine the number of times that values in the argument list, the localDataset, are less than the specified input for each cell location
localDataset	a multiband input Raster, RasterDataset, RasterBand, or RasterDescriptor defining the argument list that is used to evaluate the number of occurrences the values of the argument list are less than in the valueDataset for each cell location

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