/** {@inheritDoc} */ @Override protected LeastSquaresProblem getProblem(Collection<WeightedObservedPoint> observations) { // Prepare least-squares problem. final int len = observations.size(); final double[] target = new double[len]; final double[] weights = new double[len]; int i = 0; for (WeightedObservedPoint obs : observations) { target[i] = obs.getY(); weights[i] = obs.getWeight(); ++i; } final AbstractCurveFitter.TheoreticalValuesFunction model = new AbstractCurveFitter.TheoreticalValuesFunction(FUNCTION, observations); final double[] startPoint = initialGuess != null ? initialGuess : // Compute estimation. new ParameterGuesser(observations).guess(); // Return a new least squares problem set up to fit a Gaussian curve to the // observed points. return new LeastSquaresBuilder(). maxEvaluations(Integer.MAX_VALUE). maxIterations(maxIter). start(startPoint). target(target). weight(new DiagonalMatrix(weights)). model(model.getModelFunction(), model.getModelFunctionJacobian()). build(); }
double[] guess = new GaussianCurveFitter.ParameterGuesser(pointList).guess(); curveFitter = curveFitter.withStartPoint(guess);
/** {@inheritDoc} */ @Override protected LeastSquaresProblem getProblem(Collection<WeightedObservedPoint> observations) { // Prepare least-squares problem. final int len = observations.size(); final double[] target = new double[len]; final double[] weights = new double[len]; int i = 0; for (WeightedObservedPoint obs : observations) { target[i] = obs.getY(); weights[i] = obs.getWeight(); ++i; } final AbstractCurveFitter.TheoreticalValuesFunction model = new AbstractCurveFitter.TheoreticalValuesFunction(FUNCTION, observations); final double[] startPoint = initialGuess != null ? initialGuess : // Compute estimation. new ParameterGuesser(observations).guess(); // Return a new least squares problem set up to fit a Gaussian curve to the // observed points. return new LeastSquaresBuilder(). maxEvaluations(Integer.MAX_VALUE). maxIterations(maxIter). start(startPoint). target(target). weight(new DiagonalMatrix(weights)). model(model.getModelFunction(), model.getModelFunctionJacobian()). build(); }
/** {@inheritDoc} */ @Override protected LeastSquaresProblem getProblem(Collection<WeightedObservedPoint> observations) { // Prepare least-squares problem. final int len = observations.size(); final double[] target = new double[len]; final double[] weights = new double[len]; int i = 0; for (WeightedObservedPoint obs : observations) { target[i] = obs.getY(); weights[i] = obs.getWeight(); ++i; } final AbstractCurveFitter.TheoreticalValuesFunction model = new AbstractCurveFitter.TheoreticalValuesFunction(FUNCTION, observations); final double[] startPoint = initialGuess != null ? initialGuess : // Compute estimation. new ParameterGuesser(observations).guess(); // Return a new least squares problem set up to fit a Gaussian curve to the // observed points. return new LeastSquaresBuilder(). maxEvaluations(Integer.MAX_VALUE). maxIterations(maxIter). start(startPoint). target(target). weight(new DiagonalMatrix(weights)). model(model.getModelFunction(), model.getModelFunctionJacobian()). build(); }