Package edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util

Class LTMatrix

java.lang.Object

edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util.BasicMatrix

edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util.BasicLTMatrix

edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util.LTMatrix

Direct Known Subclasses:

SymMatrix

public class LTMatrix
extends BasicLTMatrix

Implements a space-efficient Lower Triangular Matrix of elements of type short

Author:

Raul Saavedra (rsaavedr@ai.uwf.edu)

Field Summary

Fields

Modifier and Type	Field	Description
protected short[]	A

Fields inherited from class edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util.BasicMatrix

MAX_FLOAT, MAX_INT, MAX_SHORT, MIN_FLOAT, MIN_INT, MIN_SHORT, n, name

Constructor Summary

Constructors

Constructor	Description
LTMatrix(String fname)	Creates a lower triangular matrix reading it from file fname.
LTMatrix(String mname, int nrows)	Creates a lower triangular matrix with nrows rows.

Method Summary

Modifier and Type	Method	Description
double	getDoubleValue(int r, int c)	Returns element (r,c) as a double
short	getValue(int r, int c)	Returns element (r,c)
protected void	initMatrixStorage()	Initializes the data structure used to hold the contents of the matrix
void	setAllValuesToZero()	Assign zero to all elements in the matrix
void	setDoubleValue(int r, int c, double x)	Casts double x to short and assigns it to element (r,c) This method checks that x can be converted to a short without causing overflow.
void	setValue(int r, int c, int x)	Assigns integer x to matrix element (r, c).
void	setValue(int r, int c, short x)	Assigns short x to matrix element (r, c)
String	toString()	Returns a specially formatted string with all the contents of this matrix

Methods inherited from class edu.cmu.tetrad.study.gene.tetrad.gene.algorithm.util.BasicMatrix

badIndexXcp, getName, getSize, setName

Methods inherited from class java.lang.Object

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

Field Details

A

protected short[] A

Constructor Details

LTMatrix

public LTMatrix(String mname,
 int nrows)

Creates a lower triangular matrix with nrows rows.

LTMatrix

public LTMatrix(String fname)
         throws IOException

Creates a lower triangular matrix reading it from file fname.

Throws:

IOException

Method Details

initMatrixStorage

protected void initMatrixStorage()

Initializes the data structure used to hold the contents of the matrix

Specified by:

initMatrixStorage in class BasicMatrix

setDoubleValue

public void setDoubleValue(int r,
 int c,
 double x)

Casts double x to short and assigns it to element (r,c) This method checks that x can be converted to a short without causing overflow.

Specified by:

setDoubleValue in class BasicMatrix

Parameters:

r - row index

c - column index

x - value to be assigned to element (r,c)

setValue

public void setValue(int r,
 int c,
 int x)

Assigns integer x to matrix element (r, c). This method checks that x can be converted to a short without causing overflow.

setValue

public void setValue(int r,
 int c,
 short x)

Assigns short x to matrix element (r, c)

getDoubleValue

public double getDoubleValue(int r,
 int c)

Returns element (r,c) as a double

Specified by:

getDoubleValue in class BasicMatrix

Parameters:

r - row index

c - column index

Returns:

the value stored at element (r,c) as a double

getValue

public short getValue(int r,
 int c)

Returns element (r,c)

setAllValuesToZero

public void setAllValuesToZero()

Assign zero to all elements in the matrix

Specified by:

setAllValuesToZero in class BasicMatrix

toString

public String toString()

Returns a specially formatted string with all the contents of this matrix

Overrides:

toString in class BasicLTMatrix

Returns:

a specially formatted string with all the contents of this matrix