com.numericalmethod.suanshu.matrix.generic

Interface MatrixAccess<F extends Field<F>>

Type Parameters:

F - the number Field

All Superinterfaces:

java.io.Serializable

All Known Subinterfaces:

Matrix<T,F>

All Known Implementing Classes:

ComplexMatrix, GenericMatrix, RealMatrix

public interface MatrixAccess<F extends Field<F>>
extends java.io.Serializable

This interface defines the methods for accessing entries in a matrix over a field. Indices count from 1, e.g., get(1,1). This is what mathematicians (not programmers) are accustomed to. Invalid access such as using out-of-range indices or altering immutable matrix will lead to MatrixAccessException. The only way to change a matrix is by calling set(int, int, com.numericalmethod.suanshu.mathstructure.Field). Other operations that "change" the matrix actually creates a new and independent copy.

See Also:

Field

Method Summary

Modifier and Type	Method and Description
F	get(int i, int j) Get the matrix entry at [i,j].
void	set(int i, int j, F value) Set the matrix entry at [i,j] to a value.

Method Detail

set

void set(int i,
         int j,
         F value)
  throws MatrixAccessException

Set the matrix entry at [i,j] to a value. This is the only method that may change a matrix.

Parameters:

i - the row index

j - the column index

value - the value to set A[i,j] to

Throws:

MatrixAccessException - if i or j is out of range

get

F get(int i,
      int j)
throws MatrixAccessException

Get the matrix entry at [i,j].

Parameters:

i - the row index

j - the column index

Returns:

A[i,j]

Throws:

MatrixAccessException - if i or j is out of range