uchicago.src.sim.network
Class AdjacencyDoubleMatrix

java.lang.Object
  uchicago.src.sim.network.AbstractAdjacencyMatrix
      uchicago.src.sim.network.AdjacencyDoubleMatrix

All Implemented Interfaces:

AdjacencyMatrix

public class AdjacencyDoubleMatrix
extends AbstractAdjacencyMatrix

A social network adjacency matrix. This is used as an itermediary data structure when moving between Nodes and Edges and other kinds of network representations. The matrix is assumed to be square and that the rows and columns refer to the same nodes.

Version:

$Revision: 1.6 $ $Date: 2004/11/03 19:51:01 $

Author:

Nick Collier

See Also:

Node, Edge

Field Summary

Fields inherited from class uchicago.src.sim.network.AbstractAdjacencyMatrix

comment, labels, matrixLabel

Constructor Summary

AdjacencyDoubleMatrix(cern.colt.matrix.impl.DenseDoubleMatrix2D m)
Constructs an AdjacencyMatrix from the specified DenseDoubleMatrix2D

AdjacencyDoubleMatrix(double[][] m)
Constructs an AdjacencyMatrix from the specified two dimensional double array.

AdjacencyDoubleMatrix(int rows, int cols)
Constructs an AdjacencyMatrix with the specified number of rows and columns.

AdjacencyDoubleMatrix(java.util.List labels)
Constructs an AdjacencyMatrix with the specified row/col labels.

Method Summary

int	columns() Returns the number of columns in the matrix.
double	get(int row, int col) Gets the value at row, col.
double	getAvgDegree() Gets the average degree of this matrix.
double	getDensity() Gets (computes) the density of this matrix.
cern.colt.matrix.impl.DenseDoubleMatrix1D	getRow(int row) Gets the specified row of data for this matrix.
java.lang.String	matrixToString() Returns a String representation of only the actual data matrix.
int	rows() Returns the number of rows int matrix.
void	set(int row, int col, double val) Sets a data value in this matrix.
void	setMatrix(cern.colt.matrix.impl.DenseDoubleMatrix2D m) Sets the actual matrix for this AdjacencyMatrix.
void	setMatrix(double[][] m) Sets the actual matrix for this AdjacencyMatrix.
java.lang.String	toString() Returns a String representation of this AdjacencyMatrix (comment etc.)

Methods inherited from class uchicago.src.sim.network.AbstractAdjacencyMatrix

getComment, getLabels, getMatrixLabel, setComment, setMatrixLabel

Methods inherited from class java.lang.Object

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

Constructor Detail

AdjacencyDoubleMatrix

public AdjacencyDoubleMatrix(int rows,
                             int cols)

Constructs an AdjacencyMatrix with the specified number of rows and columns. The intial state of every ij is 0.

Parameters:

rows - the number of rows in the matrix

cols - the number of cols in the matrix

AdjacencyDoubleMatrix

public AdjacencyDoubleMatrix(java.util.List labels)

Constructs an AdjacencyMatrix with the specified row/col labels. The matrix row and column size are set equal to the size of the lables vector.

Parameters:

labels - the row & column labels

AdjacencyDoubleMatrix

public AdjacencyDoubleMatrix(cern.colt.matrix.impl.DenseDoubleMatrix2D m)

Constructs an AdjacencyMatrix from the specified DenseDoubleMatrix2D

Parameters:

m - the DenseDoubleMatrix2D to construct this AdjacencyMatrix from

AdjacencyDoubleMatrix

public AdjacencyDoubleMatrix(double[][] m)

Constructs an AdjacencyMatrix from the specified two dimensional double array.

Parameters:

m - the 2D double array to construct this AdjacencyMatrix from.

Method Detail

setMatrix

public void setMatrix(cern.colt.matrix.impl.DenseDoubleMatrix2D m)

Sets the actual matrix for this AdjacencyMatrix.

Parameters:

m - the actual matrix data for this AdjacencyMatrix

setMatrix

public void setMatrix(double[][] m)

Sets the actual matrix for this AdjacencyMatrix.

Parameters:

m - the actual matrix data for this AdjacencyMatrix

getRow

public cern.colt.matrix.impl.DenseDoubleMatrix1D getRow(int row)

Gets the specified row of data for this matrix.

Parameters:

row - the index of the row to get

getDensity

public double getDensity()

Gets (computes) the density of this matrix.

getAvgDegree

public double getAvgDegree()

Gets the average degree of this matrix.

set

public void set(int row,
                int col,
                double val)

Sets a data value in this matrix.

Parameters:

row - the row index (i)

col - the col index (j)

get

public double get(int row,
                  int col)

Gets the value at row, col.

Parameters:

row - the row index (i)

col - the col index (j)

Returns:

the double value at row, col (ij)

rows

public int rows()

Returns the number of rows int matrix.

columns

public int columns()

Returns the number of columns in the matrix.

matrixToString

public java.lang.String matrixToString()

Returns a String representation of only the actual data matrix.

toString

public java.lang.String toString()

Returns a String representation of this AdjacencyMatrix (comment etc.) together with the actual data matrix.

Overrides:

toString in class java.lang.Object