Package edu.cmu.tetrad.data

Interface Covariances

public interface Covariances
Some comemon methods for the various covariance implementations.
Version:
$Id: $Id
Author:
Joseph D. Ramsey

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final long
    serialVersionUID
    Constant serialVersionUID=23L

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    covariance(int i, int j)
    Returns the covariance at (i, j).
    double[][]
    getMatrix()
    Returns the underlying covariance matrix.
    double[][]
    getSubMatrix(int[] rows, int[] cols)
    Returns a submatrix of the covariance matrix for the given rows and columns.
    void
    setCovariance(int i, int j, double v)
    Sets the covariance at (i, j) to a particular value.
    int
    size()
    Returns the dimensiom of the matrix.

  • Field Details

    • serialVersionUID

      static final long serialVersionUID
      Constant serialVersionUID=23L
      See Also:

  • Method Details

    • covariance

      double covariance(int i, int j)
      Returns the covariance at (i, j).
      Parameters:
      i - a int
      j - a int
      Returns:
      a double

    • size

      int size()
      Returns the dimensiom of the matrix.
      Returns:
      a int

    • setCovariance

      void setCovariance(int i, int j, double v)
      Sets the covariance at (i, j) to a particular value. Not effective for implemetations that calculate covariances from data on the fly.
      Parameters:
      i - a int
      j - a int
      v - a double

    • getMatrix

      double[][] getMatrix()
      Returns the underlying covariance matrix.
      Returns:
      an array of double objects

    • getSubMatrix

      double[][] getSubMatrix(int[] rows, int[] cols)
      Returns a submatrix of the covariance matrix for the given rows and columns.
      Parameters:
      rows - an array of int objects
      cols - an array of int objects
      Returns:
      an array of double objects