Package org.pepstock.charba.client.options

Class Decimation

java.lang.Object

org.pepstock.charba.client.commons.NativeObjectContainer

org.pepstock.charba.client.commons.AbstractNode

org.pepstock.charba.client.options.AbstractModel<Plugins,IsDefaultDecimation>

org.pepstock.charba.client.options.Decimation

All Implemented Interfaces:

IsDefaultDecimation

public final class Decimation
extends AbstractModel<Plugins,IsDefaultDecimation>
implements IsDefaultDecimation

The decimation plugin can be used with line charts to automatically decimate data at the start of the chart life cycle.

To use the decimation plugin, the following requirements must be met:

• the data set must have an IndexAxis.X
• the data set must be a LineDataset
• the X axis for the data set must be either a CartesianLinearAxis or CartesianTimeAxis or CartesianTimeSeriesAxis

Author:

Andrea "Stock" Stocchero

Method Summary

Modifier and Type	Method	Description
DecimationAlgorithm	getAlgorithm()	Returns the algorithm used by the plugin.
double	getSamples()	If the DecimationAlgorithm.LTTB algorithm is used, this is the number of samples in the output data set. Defaults to the canvas width to pick 1 sample per pixel.
double	getThreshold()	If the number of samples in the current axis range is above this value, the decimation will be triggered. Defaults to 4 times the canvas width. The number of point after decimation can be higher than the threshold value.
boolean	isEnabled()	Returns true if decimation are enabled.
void	setAlgorithm(DecimationAlgorithm algorithm)	Sets the algorithm used by the plugin.
void	setEnabled(boolean enabled)	Sets true if decimation are enabled.
void	setSamples(double samples)	If the DecimationAlgorithm.LTTB algorithm is used, this is the number of samples in the output data set. Defaults to the canvas width to pick 1 sample per pixel.
void	setThreshold(double threshold)	If the number of samples in the current axis range is above this value, the decimation will be triggered. Defaults to 4 times the canvas width. The number of point after decimation can be higher than the threshold value.

Methods inherited from class org.pepstock.charba.client.options.AbstractModel

getDefaultValues, getParent, loadPadding, setCallbackToModel, setCallbackToModel, setEventToModel

Methods inherited from class org.pepstock.charba.client.commons.AbstractNode

checkAndAddToParent, getChildKey, getParentNode, getRootNode, getUpdateListener, retrieveRoot, setArrayValueAndAddToParent, setArrayValueAndAddToParent, setArrayValueAndAddToParent, setElementAndAddToParent, setInternalCallbackToModel, setInternalCallbackToModel, setUpdateListener, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent, setValueOrArrayAndAddToParent

Methods inherited from class org.pepstock.charba.client.commons.NativeObjectContainer

checkAndGetColor, checkDefaultValuesArgument, empty, getArrayValue, getElement, getIncrementalId, getNativeChart, getNativeEvent, getNativeObject, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValueForMultipleKeyTypes, getValueForMultipleKeyTypes, getValueForMultipleKeyTypes, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, has, has, isType, keys, loadNativeObject, remove, remove, setArrayValue, setArrayValue, setArrayValue, setElement, setEmptyValue, setNewIncrementalId, setNewIncrementalId, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, toJSON, type

Methods inherited from class java.lang.Object

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

Method Detail

setEnabled

public void setEnabled(boolean enabled)

Sets true if decimation are enabled.

Parameters:

enabled - true if decimation are enabled.

isEnabled

public boolean isEnabled()

Returns true if decimation are enabled.

Specified by:

isEnabled in interface IsDefaultDecimation

Returns:

true if decimation are enabled.

setAlgorithm

public void setAlgorithm(DecimationAlgorithm algorithm)

Sets the algorithm used by the plugin.

Parameters:

algorithm - the algorithm used by the plugin

getAlgorithm

public DecimationAlgorithm getAlgorithm()

Returns the algorithm used by the plugin.

Specified by:

getAlgorithm in interface IsDefaultDecimation

Returns:

the algorithm used by the plugin

setSamples

public void setSamples(double samples)

If the DecimationAlgorithm.LTTB algorithm is used, this is the number of samples in the output data set.
Defaults to the canvas width to pick 1 sample per pixel.

Parameters:

samples - the number of samples in the output data set

getSamples

public double getSamples()

If the DecimationAlgorithm.LTTB algorithm is used, this is the number of samples in the output data set.
Defaults to the canvas width to pick 1 sample per pixel.

Specified by:

getSamples in interface IsDefaultDecimation

Returns:

the number of samples in the output data set

setThreshold

public void setThreshold(double threshold)

If the number of samples in the current axis range is above this value, the decimation will be triggered.
Defaults to 4 times the canvas width.
The number of point after decimation can be higher than the threshold value.

Parameters:

threshold - the number of samples in the current axis range is above this value, the decimation will be triggered

getThreshold

public double getThreshold()

If the number of samples in the current axis range is above this value, the decimation will be triggered.
Defaults to 4 times the canvas width.
The number of point after decimation can be higher than the threshold value.

Specified by:

getThreshold in interface IsDefaultDecimation

Returns:

the number of samples in the current axis range is above this value, the decimation will be triggered