Please disregard my previous question! I figured out what I was missing. Oscar
Oscar Bastidas, Ph.D. Postdoctoral Research Associate University of Minnesota On Wed, Jan 8, 2020, 2:12 PM Oscar Bastidas <[email protected]> wrote: > Hello, > > Would someone please tell me how I am supposed to acquire the actual > numeric coefficients for a linear regression using the > PolynomialCurveFitter class? > > Below is my code (it's supposed to be a simple example) and when I print > out the variable that stores the coefficients, ("coeff" in the below > example) what is printed to the command line is a strange code: > *[D@1610302.* > > This happens regardless of the order of the polynomial I request. > > Would someone please help me with this? Thanks. > > *********************** CODE BELOW ****************************** > > import java.util.*; > import org.apache.commons.math3.fitting.PolynomialCurveFitter; > import org.apache.commons.math3.fitting.*; > > public class MathTester > { > public static void main(String[] args) { > // Testing linear regression > final WeightedObservedPoints obs = new WeightedObservedPoints(); > > // Acquiring data points > obs.add(-1.00, 2.021170); > obs.add(-0.99, 2.221135); > obs.add(-0.98, 2.099852); > > // Instantiate 2nd degree polynomial fitting > final PolynomialCurveFitter fitter = > PolynomialCurveFitter.create(2); > > // Retrieve fitted coefficients of the fitted data > final double[] coeff = fitter.fit(obs.toList()); > > // Printing out coefficients > System.out.println("The coefficients are: " + coeff); > > } // END 'main' > } // END class > > ************************************************************ > > Oscar > > Oscar Bastidas, Ph.D. > Postdoctoral Research Associate > University of Minnesota >
