PixelAsPoint Class Reference

Inheritance diagram for PixelAsPoint:

Collaboration diagram for PixelAsPoint:

Public Member Functions
String	getURI ()
Geometry	attribute (GridCoverage coverage, Integer columnx, Integer rowy)
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Member Function Documentation

attribute()

Geometry attribute	(	GridCoverage	coverage,
		Integer	columnx,
		Integer	rowy
	)

Reimplemented from RasterAttributeIntIntGeomFunction.

                                                                                        {
                /*coverage.getGridGeometry().getGridToCRS(anchor)
                PixelInCell pincell=new Pixel;
                pincell.
                
                coverage.getGridGeometry().getGridToCRS(anchor)*/
                // TODO Auto-generated method stub
                return null;
        }

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 3) {
                        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 longitude = Integer.valueOf(args[1].stringValue());
                        Integer latitude = Integer.valueOf(args[2].stringValue());
                        Geometry result = attribute(geom,longitude,latitude);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                return null;
        }

References RasterAttributeIntIntGeomFunction.attribute(), and LiteralRegistry.getLiteral().

Referenced by RasterToWorldCoordTest.testRasterToWorldCoord(), and WorldToRasterCoordTest.testWorldToRasterCoord().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_pixelAsPoint.stringValue();
        }

References POSTGIS.st_pixelAsPoint.