Constructor Detail

• XYStats

  public XYStats​(boolean xLog,
                 boolean yLog)

  Constructs a new correlation statistics calculator.

  Parameters:

  xLog - whether the X coordinates are being plotted on a logarithmic scale

  yLog - whether the Y coordinates are being plotted on a logarithmic scale

Method Detail

• addPoint

  public void addPoint​(double x,
                       double y)

  Submits a data point for calculations.

  Parameters:

  x - X coordinate

  y - Y coordinate

• getLinearCoefficients

  public double[] getLinearCoefficients​()

  Returns the polynomial coefficients of a linear regression line for the submitted data.

  Returns:

  2-element array: (intercept, gradient)

• getCorrelation

  public double getCorrelation​()

  Returns the product moment correlation coefficient.

  Returns:

  correlation coefficient

• linearRegressionLine

  public double[] linearRegressionLine​()

  Calculates the linear regression line for the submitted points. The endpoints of the line correspond to the lowest and highest X values submitted.

  Returns:

  4-element array giving the endpoints (low-X, low-Y, high-X, high-Y) of a linear regression line for these data