Package dk.alexandra.fresco.stat.utils

Class MatrixUtils

Object
MatrixUtils
public class MatrixUtils
extends Object

  • Nested Class Summary

    Nested Classes 
    Modifier and Type Class Description
    static interface  MatrixUtils.MatrixPopulator<E>  

  • Constructor Summary

    Constructors 
    Constructor Description
    MatrixUtils()  

  • Method Summary

    Modifier and Type Method Description
    static <E> Matrix<E> buildMatrix​(int h, int w, MatrixUtils.MatrixPopulator<E> populator)
    Create a new matrix with the given height and width and populate it use the populator.
    static <E,​ F> Matrix<E> map​(Matrix<F> matrix, Function<F,​E> function)
    Map a matrix to another matrix of the same size using the given function
    static <E> Matrix<E> subMatrix​(Matrix<E> matrix, int i0, int i1, int j0, int j1)
    Create a new matrix from the given one with rows and columns taken from certain intervals.
    static <E> Matrix<E> transpose​(Matrix<E> a)
    Return a new matrix equal to the transpose of the given matrix

    Methods inherited from class Object

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

  • Constructor Details

  • Method Details

    • buildMatrix

      public static <E> Matrix<E> buildMatrix​(int h, int w, MatrixUtils.MatrixPopulator<E> populator)
      Create a new matrix with the given height and width and populate it use the populator.

    • map

      public static <E,​ F> Matrix<E> map​(Matrix<F> matrix, Function<F,​E> function)
      Map a matrix to another matrix of the same size using the given function

    • transpose

      public static <E> Matrix<E> transpose​(Matrix<E> a)
      Return a new matrix equal to the transpose of the given matrix

    • subMatrix

      public static <E> Matrix<E> subMatrix​(Matrix<E> matrix, int i0, int i1, int j0, int j1)
      Create a new matrix from the given one with rows and columns taken from certain intervals.
      Type Parameters:
      E -
      Parameters:
      matrix - The base matrix.
      i0 - The lower bound (inclusive) for the rows to include.
      i1 - The upper bound (exclusive) for the rows to include.
      j0 - The lower bound (inclusive) for the columns to include.
      j1 - The upper bound (exclusive) for the columns to include.
      Returns:
      A new matrix from the given one with rows and columns taken from certain intervals