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 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(Renderer g)
      Description copied from class: Shape
      Draws the shape.
      Specified by:
      paint in class Shape
      Parameters:
      g - the renderer.

    • getLowerBound

      public double[] getLowerBound()
      Description copied from class: Plot
      Returns the lower bound of data.
      Specified by:
      getLowerBound in class Plot
      Returns:
      the lower bound of data.

    • getUpperBound

      public double[] getUpperBound()
      Description copied from class: Plot
      Returns the upper bound of data.
      Specified by:
      getUpperBound in class Plot
      Returns:
      the upper bound of data.

    • of

      public static QQPlot of(double[] x)
      One sample Q-Q plot to standard normal distribution.
      Parameters:
      x - the data.
      Returns:
      the Q-Q plot.

    • of

      public static QQPlot of(double[] x, Distribution d)
      One sample Q-Q plot to given distribution.
      Parameters:
      x - the data.
      d - the distribution.
      Returns:
      the Q-Q plot.

    • of

      public static QQPlot of(int[] x, DiscreteDistribution d)
      One sample Q-Q plot to given discrete distribution.
      Parameters:
      x - the data.
      d - the distribution.
      Returns:
      the Q-Q plot.

    • of

      public static QQPlot of(double[] x, double[] y)
      Two sample Q-Q plot.
      Parameters:
      x - the data.
      y - another data.
      Returns:
      the Q-Q plot.

    • of

      public static QQPlot of(int[] x, int[] y)
      Two sample Q-Q plot.
      Parameters:
      x - the data.
      y - another data.
      Returns:
      the Q-Q plot.