areadiversity

areadiversity

Number of unique cell values within an area

Result = areadiversity(expression, areaclass)
expression

spatial boolean, nominal, ordinal

areaclass

spatial boolean, nominal, ordinal

Result

spatial scalar

Operation

areaclass Identifies the class to which a cell belongs: cells with corresponding values on areaclass are member of a separate class. For each separate class the number of unique cell values on expression is counted. This number is assigned to all cells belonging to that class. This is done for all classes and saved as Result.

Notes

A cell with missing value on areaclass will result in a missing value on Result at the corresponding cell.

Group

This operation belongs to the group of Area operators

See Also

Area operations

Examples

  1. • pcrcalc
    binding
    Result = Result.map;
    Class = Class.map;
    Expr = Expr.map;
    initial
    report Result = areadiversity( Expr, Class);

    • python
    Class = readmap(“Class.map”)
    Expr = readmap(“Expr.map”)
    Result = areadiversity( Expr, Class)

    Result.map

    Class.map

    Expr.map

    ../../_images/areadiversity_Result.png ../../_images/areaarea_Class.png ../../_images/areadiversity_Expr.png