org.genepattern.data.matrix
Class IntMatrix2D

java.lang.Object
  org.genepattern.data.matrix.IntMatrix2D

public class IntMatrix2D

extends java.lang.Object

A dense 2-dimensional matrix holding int elements.

Constructor Summary

IntMatrix2D(int[][] matrix)
Creates a new matrix

IntMatrix2D(int rows, int columns)
Creates a new matrix

Method Summary

int	get(int row, int column) Gets a single element
int[][]	getArray() Gets the underlying int[][] array
int	getColumnCount() Gets the column dimension.
int[]	getRow(int row) Gets the underlying array at the given row
int	getRowCount() Gets the row dimension.
void	set(int rowIndex, int columnIndex, int value) Sets a single element.
IntMatrix2D	slice(int[] rowIndices, int[] columnIndices) Constructs and returns a new matrix that contains the indicated cells.

Methods inherited from class java.lang.Object

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

Constructor Detail

IntMatrix2D

public IntMatrix2D(int rows,
                   int columns)

Creates a new matrix

Parameters:

rows - The number of rows.

columns - The number of columns.

IntMatrix2D

public IntMatrix2D(int[][] matrix)

Creates a new matrix

Parameters:

matrix - the data

Method Detail

getArray

public int[][] getArray()

Gets the underlying int[][] array

Returns:

the array

getRow

public int[] getRow(int row)

Gets the underlying array at the given row

Parameters:

row - Row index

Returns:

the row array

slice

public IntMatrix2D slice(int[] rowIndices,
                         int[] columnIndices)

Constructs and returns a new matrix that contains the indicated cells. Indices can be in arbitrary order.

Parameters:

rowIndices - The rows of the cells in the new matrix. To indicate that the new matrix should contain all rows, set this parameter to null.

columnIndices - The columns of the cells in the new matrix. To indicate that the new matrix should contain all columns, set this parameter to null.

Returns:

the new matrix

set

public void set(int rowIndex,
                int columnIndex,
                int value)

Sets a single element.

Parameters:

value - A(row,column).

rowIndex - The row index.

columnIndex - The column index.

get

public int get(int row,
               int column)

Gets a single element

Parameters:

row - Row index.

column - Column index.

Returns:

The value at A[row,column]

getRowCount

public int getRowCount()

Gets the row dimension.

Returns:

m, the number of rows.

getColumnCount

public int getColumnCount()

Gets the column dimension.

Returns:

n, the number of columns.