ilog.views.chart

Class IlvLogarithmicStepsDefinition

java.lang.Object

ilog.views.chart.IlvStepsDefinition

ilog.views.chart.IlvLogarithmicStepsDefinition

All Implemented Interfaces:

Serializable

public class IlvLogarithmicStepsDefinition
extends IlvStepsDefinition

A steps definition for logarithmic scales.

Note: Setting a logarithmic steps definition on a scale does not change the axis transformation used for displaying data points. If you want to change the axis transformation according to the scale labels, use the method IlvScale.setLogarithmic(double).

Since:

JViews 5.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IlvLogarithmicStepsDefinition() Creates a new IlvLogarithmicStepsDefinition.

Method Summary

Modifier and Type	Method and Description
String	computeLabel(double value) Computes the label associated with the specified value.
NumberFormat	getNumberFormat() Returns the format used to translate step values into labels.
boolean	hasSubStep() Indicates whether this object defines substeps.
double	incrementStep(double v) Returns the next step value.
double	incrementSubStep(double v) Returns the next substep value.
double	previousStep(double v) Returns the step value immediately before the specified value.
double	previousSubStep(double v) Returns the substep value immediately before the specified value.
void	setNumberFormat(NumberFormat fmt) Specifies the format used to translate step values into labels.

Methods inherited from class ilog.views.chart.IlvStepsDefinition

getLocale, getScale, getULocale, hasNext, localeChanged, nextStep, nextSubStep, update

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvLogarithmicStepsDefinition

public IlvLogarithmicStepsDefinition()

Creates a new IlvLogarithmicStepsDefinition.

Method Detail

hasSubStep

public boolean hasSubStep()

Indicates whether this object defines substeps. The default implementation returns true.

Overrides:

hasSubStep in class IlvStepsDefinition

previousStep

public double previousStep(double v)

Returns the step value immediately before the specified value.

Specified by:

previousStep in class IlvStepsDefinition

incrementStep

public double incrementStep(double v)

Returns the next step value.

Specified by:

incrementStep in class IlvStepsDefinition

previousSubStep

public double previousSubStep(double v)

Returns the substep value immediately before the specified value.

Overrides:

previousSubStep in class IlvStepsDefinition

See Also:

IlvStepsDefinition.hasSubStep()

incrementSubStep

public double incrementSubStep(double v)

Returns the next substep value.

Overrides:

incrementSubStep in class IlvStepsDefinition

See Also:

IlvStepsDefinition.hasSubStep()

getNumberFormat

public NumberFormat getNumberFormat()

Returns the format used to translate step values into labels.

See Also:

setNumberFormat(java.text.NumberFormat)

setNumberFormat

public void setNumberFormat(NumberFormat fmt)

Specifies the format used to translate step values into labels.

Note: setNumberFormat(null) sets the format to a locale dependent default format.

See Also:

getNumberFormat()

computeLabel

public String computeLabel(double value)

Computes the label associated with the specified value. This method uses the format specified by setNumberFormat(java.text.NumberFormat).

Specified by:

computeLabel in class IlvStepsDefinition

Parameters:

value - Numeric coordinate value.

Returns:

A label denoting this value.