Application: gvSIG desktop » gvSIG raster

    private Band band;

    private boolean calculated;

    public void calculate(SimpleTaskStatus status) {

    @Override

    public double getCovariance(StatisticsBand statisticBand) {

        Band otherBand = ((DefaultStatisticsBand)statisticBand).getBand(); //FIXME: OJO

        long otherBandLenght = statisticBand.getBandLenght();

        if(getBandLenght()!=otherBandLenght){

            return 0;

        }

        MeanOperation productMeanOperation = new MeanOperation();

        productMeanOperation.pre();

        for(int row=0; row<band.getRows(); row++){

            for(int column=0; column<band.getColumns(); column++){

                Object obj = band.get(row, column);

                Object obj2 = otherBand.get(row, column);

                if(obj instanceof Number && obj2 instanceof Number){

                    double value = ((Number)obj).doubleValue() * ((Number)obj2).doubleValue();

                    productMeanOperation.addValue(value);

                }

            }

        }

        productMeanOperation.post();

        return ((Number)productMeanOperation.getResult()).doubleValue()-(this.getMean()*statisticBand.getMean());

    }

    @Override

    public double getMedian() {

        return getHistogramBand().getMedian();

    }

    protected Band getBand() {

        return this.band;

    }