package jas2.hist;
import jas2.util.DoubleWithError;

public abstract class Fittable1DFunction extends Basic1DFunction implements ExtendedStatistics
{
    public abstract double valueAt(double x, double[] param) throws FunctionValueUndefined;
    abstract public void setFit(Fitter fit, double[] param) throws InvalidFunctionParameter;
    public boolean[] getIncludeParametersInFit()
    {
        initIncludeParametersInFit(getParameterNames().length);
        return m_fitParms;
    }
    public void clearFitParams()
    {
        m_fitParms = null;
    }
    public void setIncludeParameterInFit(int index, boolean value)
    {
        initIncludeParametersInFit(getParameterNames().length);
        m_fitParms[index] = value;
        clearFit();
        setChanged();
    }
    protected void initIncludeParametersInFit(int nParameters)
    {
        if (m_fitParms == null || m_fitParms.length != nParameters)
        {
            m_fitParms = new boolean[nParameters];
            for (int i=0; ix
    */
    
    public double[] getDerivatives(double x, double[] a) throws FunctionValueUndefined
    {
        int nterms = a.length;
        double[] result = new double[nterms];
        
        double[] deltaA = getParameterDeltas();
        
        for (int j=0; j