org.gvsig.raster.impl.store.properties

Class SimpleProviderHistogramComputer

java.lang.Object

org.gvsig.raster.impl.store.properties.SimpleProviderHistogramComputer

All Implemented Interfaces:

BaseIncrementableTask, IncrementableTask, HistogramComputer

public class SimpleProviderHistogramComputer
extends Object
implements HistogramComputer

Clase para la gestión de histogramas de un raster. Es la encargada del calculo de un histograma total o parcial de un raster a partir de los datos de disco. Además también es la encargada de gestionar salvar este histograma a .rmf. En caso de que solicite un histograma del raster completo este irá a buscarlo al fichero rmf asociado antes de calcularlo por si ya existise. Al realizar el calculo del histograma de la imagen completa este será salvado en el fichero .rmf asociado al raster.

Field Summary

Fields

Modifier and Type	Field and Description
protected BufferHistogramImpl	histogram Histograma de la imagen completa

Constructor Summary

Constructors

Constructor and Description
SimpleProviderHistogramComputer(RasterProvider provider) Constructor

Method Summary

Modifier and Type	Method and Description
BufferHistogram	getBufferHistogram() Obtiene el histograma.
String	getLog() Devuelve el contenido del log del IncrementableTask
double	getMaximum() Obtiene el maximo valor de las estadisticas de un histograma.
double	getMinimum() Obtiene el minimo valor de las estadisticas de un histograma.
int	getPercent() Obtiene el porcentaje de progreso del proceso de calculo de histograma
boolean	isCancelable() Determines if this process can be canceled.
boolean	isPausable() Determines if this process can be paused.
void	refreshHistogram() Force to recalculate the histogram next time that the method getBufferHistogram be called
void	resetPercent() Pone a cero el porcentaje de progreso del proceso de calculo de histograma
protected void	setBufferHistogram(BufferHistogram bh)
void	setPercent(int value) Sets the increment of this task
void	setScaleHistogram(double scale) This value represents the percentage of the image that will be used for this process.
static HistogramComputer	union(RasterProvider prov, List<RasterProvider> list) Joins the this histogram object with the parameter and returns a new Histogram object.

Methods inherited from class java.lang.Object

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

Field Detail

histogram

protected BufferHistogramImpl histogram

Histograma de la imagen completa

Constructor Detail

SimpleProviderHistogramComputer

public SimpleProviderHistogramComputer(RasterProvider provider)

Constructor

Parameters:

dataset -

Method Detail

setScaleHistogram

public void setScaleHistogram(double scale)

Description copied from interface: HistogramComputer

This value represents the percentage of the image that will be used for this process. The default value is one, that means that the entire image will be processed

Specified by:

setScaleHistogram in interface HistogramComputer

getMinimum

public double getMinimum()

Obtiene el minimo valor de las estadisticas de un histograma.

Specified by:

getMinimum in interface HistogramComputer

Returns:

double

getMaximum

public double getMaximum()

Obtiene el maximo valor de las estadisticas de un histograma.

Specified by:

getMaximum in interface HistogramComputer

Returns:

double

getBufferHistogram

public BufferHistogram getBufferHistogram()
                                   throws HistogramException,
                                          ProcessInterruptedException

Obtiene el histograma. Si puede conseguirlo del fichero rmf irá allí a buscarlo sino lo calculará.

Specified by:

getBufferHistogram in interface HistogramComputer

Returns:

histograma

Throws:

HistogramException

ProcessInterruptedException

resetPercent

public void resetPercent()

Pone a cero el porcentaje de progreso del proceso de calculo de histograma

Specified by:

resetPercent in interface HistogramComputer

getPercent

public int getPercent()

Obtiene el porcentaje de progreso del proceso de calculo de histograma

Specified by:

getPercent in interface BaseIncrementableTask

Returns:

porcentaje de progreso

refreshHistogram

public void refreshHistogram()

Description copied from interface: HistogramComputer

Force to recalculate the histogram next time that the method getBufferHistogram be called

Specified by:

refreshHistogram in interface HistogramComputer

setBufferHistogram

protected void setBufferHistogram(BufferHistogram bh)

union

public static HistogramComputer union(RasterProvider prov,
                                      List<RasterProvider> list)
                               throws HistogramException,
                                      InterruptedException

Joins the this histogram object with the parameter and returns a new Histogram object.

Parameters:

stats -

Returns:

Throws:

InterruptedException

HistogramException

getLog

public String getLog()

Description copied from interface: IncrementableTask

Devuelve el contenido del log del IncrementableTask

Specified by:

getLog in interface IncrementableTask

Returns:

String

isCancelable

public boolean isCancelable()

Description copied from interface: IncrementableTask

Determines if this process can be canceled.

Specified by:

isCancelable in interface IncrementableTask

Returns:

true if this process can be canceled, otherwise false

isPausable

public boolean isPausable()

Description copied from interface: IncrementableTask

Determines if this process can be paused.

Specified by:

isPausable in interface IncrementableTask

Returns:

true if this process can be paused, otherwise false

setPercent

public void setPercent(int value)

Description copied from interface: BaseIncrementableTask

Sets the increment of this task

Specified by:

setPercent in interface BaseIncrementableTask