org.jfree.data.statistics
Class Regression
java.lang.Objectorg.jfree.data.statistics.Regression
A utility class for fitting regression curves to data.
static double[] | getOLSRegression(double[][] data)- Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to
the data using ordinary least squares regression.
|
static double[] | getOLSRegression(XYDataset data, int series)- Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to
the data using ordinary least squares regression.
|
static double[] | getPowerRegression(double[][] data)- Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to
the data using a power regression equation.
|
static double[] | getPowerRegression(XYDataset data, int series)- Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to
the data using a power regression equation.
|
getOLSRegression
public static double[] getOLSRegression(double[][] data)
Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to
the data using ordinary least squares regression. The result is
returned as a double[], where result[0] --> a, and result[1] --> b.
getOLSRegression
public static double[] getOLSRegression(XYDataset data,
int series) Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to
the data using ordinary least squares regression. The result is returned
as a double[], where result[0] --> a, and result[1] --> b.
data - the data.series - the series (zero-based index).
getPowerRegression
public static double[] getPowerRegression(double[][] data)
Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to
the data using a power regression equation. The result is returned as
an array, where double[0] --> a, and double[1] --> b.
getPowerRegression
public static double[] getPowerRegression(XYDataset data,
int series) Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to
the data using a power regression equation. The result is returned as
an array, where double[0] --> a, and double[1] --> b.
data - the data.series - the series to fit the regression line against.