ArcObjects Library Reference (SpatialAnalyst)

IMapAlgebraOp.Execute Method

Produces a GeoDataset by executing an expression.

[Visual Basic .NET]
Public Function Execute ( _
    ByVal expression As String _
) As IGeoDataset

[C#]
public IGeoDataset Execute (
    string expression
);

[C++]
HRESULT Execute(
  BSTR expression,
  IGeoDataset** geoDataset
);

[C++]
Parameters
expression [in]
  expression is a parameter of type BSTR
geoDataset [out, retval]
  geoDataset is a parameter of type IGeoDataset

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

expression

a string statement specifying a map algebra equation.

Symbol objects created from IMapAlgebra::BindRaster must be surrounded by "[ ]"
Example. "[Ras01] + [Ras02]"

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