Module org.opengis.geoapi
Package org.opengis.referencing.operation

Interface Matrix

@UML(identifier="PT_Matrix", specification=OGC_01009) public interface Matrix
A two dimensional array of numbers. Row and column numbering begins with zero. The API for this interface matches closely the API in various
invalid @linkplain 
matrix
implementations available in Java3D, which should enable straightforward implementations. Java3D provides matrix for the general case and optimized versions for 3×3 and 4×4 cases, which are quite common in a transformation package.
Since:
1.0
See Also:
  • invalid @see 
    javax.vecmath.Matrix3d
  • invalid @see 
    javax.vecmath.Matrix4d
  • invalid @see 
    javax.vecmath.GMatrix
  • AffineTransform
  • invalid @see 
    javax.media.jai.PerspectiveTransform
  • invalid @see 
    javax.media.j3d.Transform3D
  • Jama matrix

  • Method Summary

    Modifier and Type
    Method
    Description
    Matrix
    clone()
    Returns a clone of this matrix.
    double
    getElement(int row, int column)
    Retrieves the value at the specified row and column of this matrix.
    int
    getNumCol()
    Returns the number of columns in this matrix.
    int
    getNumRow()
    Returns the number of rows in this matrix.
    boolean
    isIdentity()
    Returns true if this matrix is an identity matrix.
    void
    setElement(int row, int column, double value)
    Modifies the value at the specified row and column of this matrix.

  • Method Details

    • getNumRow

      int getNumRow()
      Returns the number of rows in this matrix.
      Returns:
      The number of rows in this matrix.
      Departure from OGC/ISO abstract specification:
      Departure for closer integration with the Java environment Needed for making the matrix usable. The method signature matches the one of GMatrix in the vecmath package, for straightforward implementation.

    • getNumCol

      int getNumCol()
      Returns the number of columns in this matrix.
      Returns:
      The number of columns in this matrix.
      Departure from OGC/ISO abstract specification:
      Departure for closer integration with the Java environment Needed for making the matrix usable. The method signature matches the one of GMatrix in the vecmath package, for straightforward implementation.

    • getElement

      double getElement(int row, int column)
      Retrieves the value at the specified row and column of this matrix.
      Parameters:
      row - The row number to be retrieved (zero indexed).
      column - The column number to be retrieved (zero indexed).
      Returns:
      The value at the indexed element.
      Departure from OGC/ISO abstract specification:
      Departure for closer integration with the Java environment Needed for making the matrix usable. The method signature matches the one of GMatrix in the vecmath package, for straightforward implementation.

    • setElement

      void setElement(int row, int column, double value)
      Modifies the value at the specified row and column of this matrix.
      Parameters:
      row - The row number to be retrieved (zero indexed).
      column - The column number to be retrieved (zero indexed).
      value - The new matrix element value.
      Departure from OGC/ISO abstract specification:
      Departure for closer integration with the Java environment Needed for making the matrix usable. The method signature matches the one of GMatrix in the vecmath package, for straightforward implementation.

    • isIdentity

      boolean isIdentity()
      Returns true if this matrix is an identity matrix.
      Returns:
      true if this matrix is an identity matrix.
      Departure from OGC/ISO abstract specification:
      Extension for convenience without introduction of new functionality Added as a convenience for a frequently requested operation.

    • clone

      Matrix clone()
      Returns a clone of this matrix.
      Returns:
      A clone of this matrix.