PolynomialCalibratorProc.java

package org.yamcs.xtceproc;

import java.util.Arrays;

import org.yamcs.xtce.PolynomialCalibrator;

/**
 * A calibration type where a curve in a raw vs calibrated plane is described using a set of polynomial coefficients.  
 * Raw values are converted to calibrated values by finding a position on the curve corresponding to the raw value. 
 * The first coefficient belongs with the X^0 term, the next coefficient belongs to the X^1 term and so on.
 *
 */
public class PolynomialCalibratorProc implements CalibratorProc {
    private static final long serialVersionUID = 200706050619L;
    final double[] coefficients;
    
    public PolynomialCalibratorProc(PolynomialCalibrator c) {
        coefficients = c.getCoefficients();
    }
    
    @Override
    public double calibrate(double d) {
        double val=0;
        for(int i=coefficients.length-1; i>=0; i--) {
            val=d*val+coefficients[i];
        }
        return val;
    }

    @Override
    public String toString() {
        return "PolynomialCalibrator"+Arrays.toString(coefficients);
    }
}