visad

Class LogCoordinateSystem

java.lang.Object

visad.CoordinateSystem

visad.LogCoordinateSystem

All Implemented Interfaces:

java.io.Serializable

public class LogCoordinateSystem
extends CoordinateSystem

A CoordinateSystem to transform between values and their logarithms. The logarithm is the reference.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LogCoordinateSystem(RealTupleType reference) Construct a coordinate system with logarithmical reference of base 10.
LogCoordinateSystem(RealTupleType reference, double base) Construct a coordinate system with logarithmical reference specified

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object cs) See if the Object in question is equal to this LogCoordinateSystem
double[][]	fromReference(double[][] logValues) Convert logrithmic values to values.
double	getBase() Get the base used in this LogCoordinateSystem.
double[][]	toReference(double[][] values) Convert values to logarithmic values.

Methods inherited from class visad.CoordinateSystem

canConvert, fromReference, fromReference, fromReference, getCoordinateSystemUnits, getDimension, getReference, getReferenceUnits, toReference, toReference, toReference, transformCoordinates, transformCoordinates, transformCoordinates, transformCoordinates, transformCoordinatesFreeUnits, transformCoordinatesFreeUnits

Methods inherited from class java.lang.Object

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

Constructor Detail

LogCoordinateSystem

public LogCoordinateSystem(RealTupleType reference)
                    throws VisADException

Construct a coordinate system with logarithmical reference of base 10.

Parameters:

reference - MathType of values

Throws:

VisADException - some VisAD error

LogCoordinateSystem

public LogCoordinateSystem(RealTupleType reference,
                           double base)
                    throws VisADException

Construct a coordinate system with logarithmical reference specified

Parameters:

reference - MathType of values

base - logrithmic base

Throws:

VisADException - negative or zero base specified

Method Detail

toReference

public double[][] toReference(double[][] values)
                       throws VisADException

Convert values to logarithmic values.

Specified by:

toReference in class CoordinateSystem

Parameters:

values - array of values

Returns:

array of logarithms of values

Throws:

VisADException - values dimension not the same as CS dimension

fromReference

public double[][] fromReference(double[][] logValues)
                         throws VisADException

Convert logrithmic values to values.

Specified by:

fromReference in class CoordinateSystem

Parameters:

logValues - array of logrithmic values

Returns:

array of values

Throws:

VisADException - logValues dimension not the same as CS dimension

getBase

public double getBase()

Get the base used in this LogCoordinateSystem.

equals

public boolean equals(java.lang.Object cs)

See if the Object in question is equal to this LogCoordinateSystem

Specified by:

equals in class CoordinateSystem

Parameters:

cs - Object in question

Returns:

true if cs's reference tuples and base is equal to this's