QgsRasterNuller Class Reference

Raster pipe that deals with null values. More...

#include <qgsrasternuller.h>

Inheritance diagram for QgsRasterNuller:

Classes
struct	NoData

Public Member Functions
	QgsRasterNuller (QgsRasterInterface *input=0)
	~QgsRasterNuller ()
QgsRasterInterface *	clone () const
	Clone itself, create deep copy.
int	bandCount () const
	Get number of bands.
QGis::DataType	dataType (int bandNo) const
	Returns data type for the band specified by number.
QgsRasterBlock *	block (int bandNo, const QgsRectangle &extent, int width, int height)
	Read block of data using given extent and size.
void	setNoData (int bandNo, QgsRasterRangeList noData)
QgsRasterRangeList	noData (int bandNo) const
void	setOutputNoDataValue (int bandNo, double noData)
	Set output no data value.
Public Member Functions inherited from QgsRasterInterface
	QgsRasterInterface (QgsRasterInterface *input=0)
virtual	~QgsRasterInterface ()
virtual int	capabilities () const
	Returns a bitmask containing the supported capabilities.
QString	capabilitiesString () const
	Returns the above in friendly format.
virtual QGis::DataType	srcDataType (int bandNo) const
	Returns source data type for the band specified by number, source data type may be shorter than dataType.
virtual QgsRectangle	extent ()
	Get the extent of the interface.
int	dataTypeSize (int bandNo)
virtual int	xBlockSize () const
	Get block size.
virtual int	yBlockSize () const
virtual int	xSize () const
	Get raster size.
virtual int	ySize () const
virtual QString	generateBandName (int theBandNumber) const
	helper function to create zero padded band names
virtual bool	setInput (QgsRasterInterface *input)
	Set input.
virtual QgsRasterInterface *	input () const
	Current input.
virtual bool	on () const
	Is on/off.
virtual void	setOn (bool on)
	Set on/off.
virtual const QgsRasterInterface *	srcInput () const
	Get source / raw input, the first in pipe, usually provider.
virtual QgsRasterInterface *	srcInput ()
virtual QgsRasterBandStats	bandStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Get band statistics.
virtual bool	hasStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Returns true if histogram is available (cached, already calculated).
virtual QgsRasterHistogram	histogram (int theBandNo, int theBinCount=0, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Get histogram.
virtual bool	hasHistogram (int theBandNo, int theBinCount, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Returns true if histogram is available (cached, already calculated), the parameters are the same as in histogram()
virtual void	cumulativeCut (int theBandNo, double theLowerCount, double theUpperCount, double &theLowerValue, double &theUpperValue, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Find values for cumulative pixel count cut.
virtual void	writeXML (QDomDocument &doc, QDomElement &parentElem) const
	Write base class members to xml.
virtual void	readXML (const QDomElement &filterElem)
	Sets base class members from xml.

Additional Inherited Members
Public Types inherited from QgsRasterInterface
enum	Capability {   NoCapabilities = 0, Size = 1 << 1, Create = 1 << 2, Remove = 1 << 3,   BuildPyramids = 1 << 4, Identify = 1 << 5, IdentifyValue = 1 << 6, IdentifyText = 1 << 7,   IdentifyHtml = 1 << 8, IdentifyFeature = 1 << 9 }
	If you add to this, please also add to capabilitiesString() More...
Protected Member Functions inherited from QgsRasterInterface
void	initHistogram (QgsRasterHistogram &theHistogram, int theBandNo, int theBinCount=0, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Fill in histogram defaults if not specified.
void	initStatistics (QgsRasterBandStats &theStatistics, int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theBinCount=0)
	Fill in statistics defaults if not specified.
Protected Attributes inherited from QgsRasterInterface
QgsRasterInterface *	mInput
QList< QgsRasterBandStats >	mStatistics
	List of cached statistics, all bands mixed.
QList< QgsRasterHistogram >	mHistograms
	List of cached histograms, all bands mixed.
bool	mOn

Detailed Description

Raster pipe that deals with null values.

Constructor & Destructor Documentation

QgsRasterNuller::QgsRasterNuller

(

QgsRasterInterface *

input = 0

)

QgsRasterNuller::~QgsRasterNuller

(

)

Member Function Documentation

int QgsRasterNuller::bandCount ( ) const

virtual

Get number of bands.

Implements QgsRasterInterface.

QgsRasterBlock * QgsRasterNuller::block ( int  bandNo, const QgsRectangle &  extent, int  width, int  height  )

virtual

Read block of data using given extent and size.

Returns pointer to data. Caller is responsible to free the memory returned.

Parameters

bandNo	band number
extent	extent of block
width	pixel width of block
height	pixel height of block

Implements QgsRasterInterface.

QgsRasterInterface * QgsRasterNuller::clone ( ) const

virtual

Clone itself, create deep copy.

Implements QgsRasterInterface.

QGis::DataType QgsRasterNuller::dataType ( int  bandNo ) const

virtual

Returns data type for the band specified by number.

Implements QgsRasterInterface.

QgsRasterRangeList QgsRasterNuller::noData ( int  bandNo ) const

inline

void QgsRasterNuller::setNoData	(	int	bandNo,
		QgsRasterRangeList	noData
	)

void QgsRasterNuller::setOutputNoDataValue	(	int	bandNo,
		double	noData
	)

Set output no data value.

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The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/raster/qgsrasternuller.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/raster/qgsrasternuller.cpp