com.itemanalysis.psychometrics.polycor

Class MixedCorrelationMatrix

java.lang.Object

com.itemanalysis.psychometrics.polycor.MixedCorrelationMatrix

public class MixedCorrelationMatrix
extends java.lang.Object

Author:

J. Patrick Meyer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MixedCorrelationMatrix.CorrelationType

Constructor Summary

Constructors

Constructor and Description
MixedCorrelationMatrix(java.util.ArrayList<VariableAttributes> variables, boolean maximumLikelihood)

Method Summary

Modifier and Type	Method and Description
double	getCorrelationAt(int i, int j)
double[][]	getCorrelationMatrix()
double	getStandardErrorAt(int i, int j)
void	increment(int xIndex, int yIndex, double x, double y) Increments the appropriate correlation object.
java.lang.String	printCorrelationMatrix(boolean showStdError)
java.lang.String	printCorrelationTypes()
java.lang.String	printPolychoricThresholds()

Methods inherited from class java.lang.Object

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

Constructor Detail

MixedCorrelationMatrix

public MixedCorrelationMatrix(java.util.ArrayList<VariableAttributes> variables,
                              boolean maximumLikelihood)

Method Detail

increment

public void increment(int xIndex,
                      int yIndex,
                      double x,
                      double y)

Increments the appropriate correlation object. Enforces restriction that the index for x cannot be less than the index for y. this restriction is due to using only the upper diagonal.

Parameters:

xIndex -

yIndex -

x -

y -

getCorrelationMatrix

public double[][] getCorrelationMatrix()

getCorrelationAt

public double getCorrelationAt(int i,
                               int j)

getStandardErrorAt

public double getStandardErrorAt(int i,
                                 int j)

printCorrelationMatrix

public java.lang.String printCorrelationMatrix(boolean showStdError)

printCorrelationTypes

public java.lang.String printCorrelationTypes()

printPolychoricThresholds

public java.lang.String printPolychoricThresholds()