Package smile.plot.swing

Class QQPlot

java.lang.Object

smile.plot.swing.Shape

smile.plot.swing.Plot

smile.plot.swing.QQPlot

public class QQPlot
extends Plot

A Q-Q plot ("Q" stands for quantile) is a probability plot, a kind of graphical method for comparing two probability distributions, by plotting their quantiles against each other. In addition, Q-Q plots can be used as a graphical means of estimating parameters in a location-scale family of distributions.

Constructor Summary

Constructors

Constructor	Description
QQPlot(double[][] points)	Constructor.

Method Summary

Modifier and Type	Method	Description
double[]	getLowerBound()	Returns the lower bound of data.
double[]	getUpperBound()	Returns the upper bound of data.
static QQPlot	of(double[] x)	One sample Q-Q plot to standard normal distribution.
static QQPlot	of(double[] x, double[] y)	Two sample Q-Q plot.
static QQPlot	of(double[] x, Distribution d)	One sample Q-Q plot to given distribution.
static QQPlot	of(int[] x, int[] y)	Two sample Q-Q plot.
static QQPlot	of(int[] x, DiscreteDistribution d)	One sample Q-Q plot to given discrete distribution.
void	paint(Graphics g)	Draws the shape.

Methods inherited from class smile.plot.swing.Plot

canvas, legends, toolbar, tooltip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QQPlot

public QQPlot(double[][] points)

Constructor.

Parameters:

points - the points in the plot. A point (x, y) on the plot corresponds to one of the quantiles of the second distribution (y-coordinate) plotted against the same quantile of the first distribution (x-coordinate).

Method Details

paint

public void paint(Graphics g)

Description copied from class: Shape

Draws the shape.

Specified by:

paint in class Shape

getLowerBound

public double[] getLowerBound()

Description copied from class: Plot

Returns the lower bound of data.

Specified by:

getLowerBound in class Plot

getUpperBound

public double[] getUpperBound()

Description copied from class: Plot

Returns the upper bound of data.

Specified by:

getUpperBound in class Plot

of

public static QQPlot of(double[] x)

One sample Q-Q plot to standard normal distribution.

of

public static QQPlot of(double[] x,
 Distribution d)

One sample Q-Q plot to given distribution.

of

public static QQPlot of(int[] x,
 DiscreteDistribution d)

One sample Q-Q plot to given discrete distribution.

of

public static QQPlot of(double[] x,
 double[] y)

Two sample Q-Q plot.

of

public static QQPlot of(int[] x,
 int[] y)

Two sample Q-Q plot.