RasterAlgebraUnaryFunction Class Reference

Inheritance diagram for RasterAlgebraUnaryFunction:

Collaboration diagram for RasterAlgebraUnaryFunction:

Public Member Functions
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException
abstract GridCoverage	modify (GridCoverage coverage, Integer bd1)

Member Function Documentation

evaluate()

Value evaluate	(	ValueFactory	valueFactory,
		Value...	args
	)		throws ValueExprEvaluationException

                                                                                                            {
                if (args.length != 2) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 arguments, got " + args.length);
                }
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof RasterLiteral) {
                        GridCoverage geom=((RasterLiteral)l).read(args[0].stringValue());
                        Integer bd1=Integer.valueOf(args[1].stringValue());
                        GridCoverage result = modify(geom,bd1);
                        return valueFactory.createLiteral(((RasterLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                return null;
        }

References LiteralRegistry.getLiteral(), and RasterAlgebraUnaryFunction.modify().

Referenced by ExpTest.testExp(), InvertTest.testInvert(), and NotTest.testNot().

modify()

abstract GridCoverage modify ( GridCoverage  coverage, Integer  bd1  )

abstract

Reimplemented in Not, MinFilter, MedianFilter, MaxFilter, Invert, and Exp.

Referenced by RasterAlgebraUnaryFunction.evaluate().