nr
Interface Mat

All Known Implementing Classes:

Mat_array, Mat_wrapper

public interface Mat

based on the Matrix template from Numerical Recipes. Abstracts a square vector of vectors of double

Author:

Daniel Wachsstock

Method Summary

double[][]	asArray() get the data
Mat	copy() return a copy of this, or some version that the user can manipulate at will.
double	get(int i, int j) get an individual element
Vec	getColumn(int i) get a column
Vec	getRow(int i) get a row
void	set(int i, int j, double d) set an individual element
int	size() the size of the matrix

Method Detail

size

int size()

the size of the matrix

Returns:

the size of the square matrix

get

double get(int i,
           int j)

get an individual element

Parameters:

i - the row

j - the column

Returns:

the value at i,j

getRow

Vec getRow(int i)

get a row

Parameters:

i - the row

Returns:

the actual row, or a Vec whose changes are reflected in the original matrix

getColumn

Vec getColumn(int i)

get a column

Parameters:

i - the column

Returns:

the actual column, or a Vec whose changes are reflected in the original matrix

set

void set(int i,
         int j,
         double d)

set an individual element

Parameters:

i - the row

j - the column

d - the value to set it to

Throws:

java.lang.UnsupportedOperationException - if the vector is immutable

copy

Mat copy()

return a copy of this, or some version that the user can manipulate at will. If the implementation of this is immutable, can return the original, or the implementation can do some kind of copy-on-write.

Returns:

a copy of the data

asArray

double[][] asArray()

get the data

Returns:

the data as a double[][]