The raster file writer which allows you to save a raster to a new file. More...

#include <qgsrasterfilewriter.h>

Classes
struct	FilterFormatDetails
	Details of available filters and formats. More...

Public Types
enum	Mode { Raw = 0 , Image = 1 }

enum	RasterFormatOption { SortRecommended = 1 << 1 }
	Options for sorting and filtering raster formats. More...

enum	WriterError { NoError = 0 , SourceProviderError = 1 , DestProviderError = 2 , CreateDatasourceError = 3 , WriteError = 4 , NoDataConflict = 5 , WriteCanceled = 6 }

Public Member Functions
	QgsRasterFileWriter (const QString &outputUrl)

QgsRaster::RasterBuildPyramids	buildPyramidsFlag () const

QgsRasterDataProvider *	createMultiBandRaster (Qgis::DataType dataType, int width, int height, const QgsRectangle &extent, const QgsCoordinateReferenceSystem &crs, int nBands)
	Create a raster file with given number of bands without initializing the pixel data. More...

QgsRasterDataProvider *	createOneBandRaster (Qgis::DataType dataType, int width, int height, const QgsRectangle &extent, const QgsCoordinateReferenceSystem &crs)
	Create a raster file with one band without initializing the pixel data. More...

QStringList	createOptions () const

int	maxTileHeight () const

int	maxTileWidth () const

QString	outputFormat () const

QString	outputProviderKey () const

QString	outputUrl () const
	Returns the output URL for the raster. More...

QStringList	pyramidsConfigOptions () const

QgsRaster::RasterPyramidsFormat	pyramidsFormat () const

QList< int >	pyramidsList () const

QString	pyramidsResampling () const

void	setBuildPyramidsFlag (QgsRaster::RasterBuildPyramids f)

void	setCreateOptions (const QStringList &list)

void	setMaxTileHeight (int h)

void	setMaxTileWidth (int w)

void	setOutputFormat (const QString &format)

void	setOutputProviderKey (const QString &key)

void	setPyramidsConfigOptions (const QStringList &list)

void	setPyramidsFormat (QgsRaster::RasterPyramidsFormat f)

void	setPyramidsList (const QList< int > &list)

void	setPyramidsResampling (const QString &str)

void	setTiledMode (bool t)

bool	tiledMode () const

WriterError	writeRaster (const QgsRasterPipe pipe, int nCols, int nRows, const QgsRectangle &outputExtent, const QgsCoordinateReferenceSystem &crs, const QgsCoordinateTransformContext &transformContext, QgsRasterBlockFeedback feedback=nullptr)
	Write raster file. More...

Q_DECL_DEPRECATED WriterError	writeRaster (const QgsRasterPipe pipe, int nCols, int nRows, const QgsRectangle &outputExtent, const QgsCoordinateReferenceSystem &crs, QgsRasterBlockFeedback feedback=nullptr)
	Write raster file. More...

Static Public Member Functions
static QString	driverForExtension (const QString &extension)
	Returns the GDAL driver name for a specified file extension. More...

static QStringList	extensionsForFormat (const QString &format)
	Returns a list of known file extensions for the given GDAL driver format. More...

static QString	filterForDriver (const QString &driverName)
	Creates a filter for an GDAL driver key. More...

static QList< QgsRasterFileWriter::FilterFormatDetails >	supportedFiltersAndFormats (RasterFormatOptions options=SortRecommended)
	Returns a list or pairs, with format filter string as first element and GDAL format key as second element. More...

static QStringList	supportedFormatExtensions (RasterFormatOptions options=SortRecommended)
	Returns a list of file extensions for supported formats. More...

Detailed Description

The raster file writer which allows you to save a raster to a new file.

Definition at line 39 of file qgsrasterfilewriter.h.

Member Enumeration Documentation

◆ Mode

enum QgsRasterFileWriter::Mode

Enumerator
Raw	Raw data.
Image	Rendered image.

Definition at line 42 of file qgsrasterfilewriter.h.

◆ RasterFormatOption

enum QgsRasterFileWriter::RasterFormatOption

Options for sorting and filtering raster formats.

Since: QGIS 3.0

Enumerator
SortRecommended	Use recommended sort order, with extremely commonly used formats listed first.

Definition at line 62 of file qgsrasterfilewriter.h.

◆ WriterError

enum QgsRasterFileWriter::WriterError

Enumerator
NoError
SourceProviderError
DestProviderError
CreateDatasourceError
WriteError
NoDataConflict	Internal error if a value used for 'no data' was found in input.
WriteCanceled	Writing was manually canceled.

Definition at line 47 of file qgsrasterfilewriter.h.

Constructor & Destructor Documentation

◆ QgsRasterFileWriter()

QgsRasterFileWriter::QgsRasterFileWriter ( const QString & outputUrl )

Definition at line 65 of file qgsrasterfilewriter.cpp.

Member Function Documentation

◆ buildPyramidsFlag()

QgsRaster::RasterBuildPyramids QgsRasterFileWriter::buildPyramidsFlag ( ) const

inline

Definition at line 146 of file qgsrasterfilewriter.h.

◆ createMultiBandRaster()

QgsRasterDataProvider * QgsRasterFileWriter::createMultiBandRaster	(	Qgis::DataType	dataType,
		int	width,
		int	height,
		const QgsRectangle &	extent,
		const QgsCoordinateReferenceSystem &	crs,
		int	nBands
	)

Create a raster file with given number of bands without initializing the pixel data.

Returned provider may be used to initialize the raster using writeBlock() calls. Ownership of the returned provider is passed to the caller.

Returns: Instance of data provider in editing mode (on success) or nullptr on error.

Note: Does not work with tiled mode enabled.

Since: QGIS 3.0

Definition at line 53 of file qgsrasterfilewriter.cpp.

◆ createOneBandRaster()

QgsRasterDataProvider * QgsRasterFileWriter::createOneBandRaster	(	Qgis::DataType	dataType,
		int	width,
		int	height,
		const QgsRectangle &	extent,
		const QgsCoordinateReferenceSystem &	crs
	)

Create a raster file with one band without initializing the pixel data.

Returned provider may be used to initialize the raster using writeBlock() calls. Ownership of the returned provider is passed to the caller.

Returns: Instance of data provider in editing mode (on success) or nullptr on error.

Note: Does not work with tiled mode enabled.

Since: QGIS 3.0

Definition at line 41 of file qgsrasterfilewriter.cpp.

◆ createOptions()

QStringList QgsRasterFileWriter::createOptions ( ) const

inline

Definition at line 162 of file qgsrasterfilewriter.h.

◆ driverForExtension()

QString QgsRasterFileWriter::driverForExtension ( const QString & extension )

static

Returns the GDAL driver name for a specified file extension.

E.g. the driver name for the ".tif" extension is "GTiff". If no suitable drivers are found then an empty string is returned.

Note that this method works for all GDAL drivers, including those without create support (and which are not supported by QgsRasterFileWriter).

Since: QGIS 3.0

Definition at line 1064 of file qgsrasterfilewriter.cpp.

◆ extensionsForFormat()

QStringList QgsRasterFileWriter::extensionsForFormat ( const QString & format )

static

Returns a list of known file extensions for the given GDAL driver format.

E.g. returns "tif", "tiff" for the format "GTiff".

If no matching format driver is found an empty list will be returned.

Note that this method works for all GDAL drivers, including those without create support (and which are not supported by QgsRasterFileWriter).

Since: QGIS 3.0

Definition at line 1099 of file qgsrasterfilewriter.cpp.

◆ filterForDriver()

QString QgsRasterFileWriter::filterForDriver ( const QString & driverName )

static

Creates a filter for an GDAL driver key.

Definition at line 1113 of file qgsrasterfilewriter.cpp.

◆ maxTileHeight()

int QgsRasterFileWriter::maxTileHeight ( ) const

inline

Definition at line 159 of file qgsrasterfilewriter.h.

◆ maxTileWidth()

int QgsRasterFileWriter::maxTileWidth ( ) const

inline

Definition at line 144 of file qgsrasterfilewriter.h.

◆ outputFormat()

QString QgsRasterFileWriter::outputFormat ( ) const

inline

Definition at line 135 of file qgsrasterfilewriter.h.

◆ outputProviderKey()

QString QgsRasterFileWriter::outputProviderKey ( ) const

inline

Definition at line 138 of file qgsrasterfilewriter.h.

◆ outputUrl()

QString QgsRasterFileWriter::outputUrl ( ) const

inline

Returns the output URL for the raster.

Since: QGIS 3.0

Definition at line 132 of file qgsrasterfilewriter.h.

◆ pyramidsConfigOptions()

QStringList QgsRasterFileWriter::pyramidsConfigOptions ( ) const

inline

Definition at line 165 of file qgsrasterfilewriter.h.

◆ pyramidsFormat()

QgsRaster::RasterPyramidsFormat QgsRasterFileWriter::pyramidsFormat ( ) const

inline

Definition at line 155 of file qgsrasterfilewriter.h.

◆ pyramidsList()

QList< int > QgsRasterFileWriter::pyramidsList ( ) const

inline

Definition at line 149 of file qgsrasterfilewriter.h.

◆ pyramidsResampling()

QString QgsRasterFileWriter::pyramidsResampling ( ) const

inline

Definition at line 152 of file qgsrasterfilewriter.h.

◆ setBuildPyramidsFlag()

void QgsRasterFileWriter::setBuildPyramidsFlag ( QgsRaster::RasterBuildPyramids f )

inline

Definition at line 147 of file qgsrasterfilewriter.h.

◆ setCreateOptions()

void QgsRasterFileWriter::setCreateOptions ( const QStringList & list )

inline

Definition at line 161 of file qgsrasterfilewriter.h.

◆ setMaxTileHeight()

void QgsRasterFileWriter::setMaxTileHeight ( int h )

inline

Definition at line 158 of file qgsrasterfilewriter.h.

◆ setMaxTileWidth()

void QgsRasterFileWriter::setMaxTileWidth ( int w )

inline

Definition at line 143 of file qgsrasterfilewriter.h.

◆ setOutputFormat()

void QgsRasterFileWriter::setOutputFormat ( const QString & format )

inline

Definition at line 134 of file qgsrasterfilewriter.h.

◆ setOutputProviderKey()

void QgsRasterFileWriter::setOutputProviderKey ( const QString & key )

inline

Definition at line 137 of file qgsrasterfilewriter.h.

◆ setPyramidsConfigOptions()

void QgsRasterFileWriter::setPyramidsConfigOptions ( const QStringList & list )

inline

Definition at line 164 of file qgsrasterfilewriter.h.

◆ setPyramidsFormat()

void QgsRasterFileWriter::setPyramidsFormat ( QgsRaster::RasterPyramidsFormat f )

inline

Definition at line 156 of file qgsrasterfilewriter.h.

◆ setPyramidsList()

void QgsRasterFileWriter::setPyramidsList ( const QList< int > & list )

inline

Definition at line 150 of file qgsrasterfilewriter.h.

◆ setPyramidsResampling()

void QgsRasterFileWriter::setPyramidsResampling ( const QString & str )

inline

Definition at line 153 of file qgsrasterfilewriter.h.

◆ setTiledMode()

void QgsRasterFileWriter::setTiledMode ( bool t )

inline

Definition at line 140 of file qgsrasterfilewriter.h.

◆ supportedFiltersAndFormats()

QList< QgsRasterFileWriter::FilterFormatDetails > QgsRasterFileWriter::supportedFiltersAndFormats ( RasterFormatOptions options = SortRecommended )

static

Returns a list or pairs, with format filter string as first element and GDAL format key as second element.

Relies on GDAL_DMD_EXTENSIONS metadata, if it is empty corresponding driver will be skipped even if supported.

The options argument can be used to control the sorting and filtering of returned formats.

See also: supportedFormatExtensions()

Definition at line 1137 of file qgsrasterfilewriter.cpp.

◆ supportedFormatExtensions()

QStringList QgsRasterFileWriter::supportedFormatExtensions ( RasterFormatOptions options = SortRecommended )

static

Returns a list of file extensions for supported formats.

The options argument can be used to control the sorting and filtering of returned formats.

See also: supportedFiltersAndFormats()

Since: QGIS 3.0

Definition at line 1204 of file qgsrasterfilewriter.cpp.

◆ tiledMode()

bool QgsRasterFileWriter::tiledMode ( ) const

inline

Definition at line 141 of file qgsrasterfilewriter.h.

◆ writeRaster() [1/2]

QgsRasterFileWriter::WriterError QgsRasterFileWriter::writeRaster	(	const QgsRasterPipe *	pipe,
		int	nCols,
		int	nRows,
		const QgsRectangle &	outputExtent,
		const QgsCoordinateReferenceSystem &	crs,
		const QgsCoordinateTransformContext &	transformContext,
		QgsRasterBlockFeedback *	feedback = `nullptr`
	)

Write raster file.

Parameters

pipe	raster pipe
nCols	number of output columns
nRows	number of output rows (or -1 to automatically calculate row number to have square pixels)
outputExtent	extent to output
crs	crs to reproject to
transformContext	coordinate transform context
feedback	optional feedback object for progress reports

Since: QGIS 3.8

Definition at line 84 of file qgsrasterfilewriter.cpp.

◆ writeRaster() [2/2]

QgsRasterFileWriter::WriterError QgsRasterFileWriter::writeRaster	(	const QgsRasterPipe *	pipe,
		int	nCols,
		int	nRows,
		const QgsRectangle &	outputExtent,
		const QgsCoordinateReferenceSystem &	crs,
		QgsRasterBlockFeedback *	feedback = `nullptr`
	)

Write raster file.

Parameters

pipe	raster pipe
nCols	number of output columns
nRows	number of output rows (or -1 to automatically calculate row number to have square pixels)
outputExtent	extent to output
crs	crs to reproject to
feedback	optional feedback object for progress reports

Deprecated:: since QGIS 3.8, use version with transformContext instead

Definition at line 78 of file qgsrasterfilewriter.cpp.

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

/build/qgis-3.18.1+99unstable/src/core/raster/qgsrasterfilewriter.h
/build/qgis-3.18.1+99unstable/src/core/raster/qgsrasterfilewriter.cpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ Mode

◆ RasterFormatOption

◆ WriterError

Constructor & Destructor Documentation

◆ QgsRasterFileWriter()

Member Function Documentation

◆ buildPyramidsFlag()

◆ createMultiBandRaster()

◆ createOneBandRaster()

◆ createOptions()

◆ driverForExtension()

◆ extensionsForFormat()

◆ filterForDriver()

◆ maxTileHeight()

◆ maxTileWidth()

◆ outputFormat()

◆ outputProviderKey()

◆ outputUrl()

◆ pyramidsConfigOptions()

◆ pyramidsFormat()

◆ pyramidsList()

◆ pyramidsResampling()

◆ setBuildPyramidsFlag()

◆ setCreateOptions()

◆ setMaxTileHeight()

◆ setMaxTileWidth()

◆ setOutputFormat()

◆ setOutputProviderKey()

◆ setPyramidsConfigOptions()

◆ setPyramidsFormat()

◆ setPyramidsList()

◆ setPyramidsResampling()

◆ setTiledMode()

◆ supportedFiltersAndFormats()

◆ supportedFormatExtensions()

◆ tiledMode()

◆ writeRaster() [1/2]

◆ writeRaster() [2/2]