QgsGdalUtils Class Reference

Utilities for working with GDAL. More...

#include <qgsgdalutils.h>

Static Public Member Functions
static gdal::dataset_unique_ptr	createMultiBandMemoryDataset (GDALDataType dataType, int bands, const QgsRectangle &extent, int width, int height, const QgsCoordinateReferenceSystem &crs)
	Creates a new multi band memory dataset with given parameters. More...
static gdal::dataset_unique_ptr	createSingleBandMemoryDataset (GDALDataType dataType, const QgsRectangle &extent, int width, int height, const QgsCoordinateReferenceSystem &crs)
	Creates a new single band memory dataset with given parameters. More...
static gdal::dataset_unique_ptr	createSingleBandTiffDataset (const QString &filename, GDALDataType dataType, const QgsRectangle &extent, int width, int height, const QgsCoordinateReferenceSystem &crs)
	Creates a new single band TIFF dataset with given parameters. More...
static QString	helpCreationOptionsFormat (const QString &format)
	Gets creation options metadata for a given format. More...
static gdal::dataset_unique_ptr	imageToMemoryDataset (const QImage &image)
	Converts an image to a GDAL memory dataset by borrowing image data. More...
static char **	papszFromStringList (const QStringList &list)
	Helper function. More...
static QImage	resampleImage (const QImage &image, QSize outputSize, GDALRIOResampleAlg resampleAlg)
	Resamples a QImage image using GDAL resampler. More...
static void	resampleSingleBandRaster (GDALDatasetH hSrcDS, GDALDatasetH hDstDS, GDALResampleAlg resampleAlg)
	Resamples a single band raster to the destination dataset with different resolution (and possibly with different CRS). More...
static bool	supportsRasterCreate (GDALDriverH driver)
	Reads whether a driver supports GDALCreate() for raster purposes. More...
static QString	validateCreationOptionsFormat (const QStringList &createOptions, const QString &format)
	Validates creation options for a given format, regardless of layer. More...

Friends
class	TestQgsGdalUtils

Detailed Description

Utilities for working with GDAL.

Note

not available in Python bindings

Since

QGIS 3.4

Definition at line 34 of file qgsgdalutils.h.

Member Function Documentation

createMultiBandMemoryDataset()

gdal::dataset_unique_ptr QgsGdalUtils::createMultiBandMemoryDataset ( GDALDataType  dataType, int  bands, const QgsRectangle &  extent, int  width, int  height, const QgsCoordinateReferenceSystem &  crs  )

static

Creates a new multi band memory dataset with given parameters.

Since

QGIS 3.12

Definition at line 44 of file qgsgdalutils.cpp.

createSingleBandMemoryDataset()

gdal::dataset_unique_ptr QgsGdalUtils::createSingleBandMemoryDataset ( GDALDataType  dataType, const QgsRectangle &  extent, int  width, int  height, const QgsCoordinateReferenceSystem &  crs  )

static

Creates a new single band memory dataset with given parameters.

Since

QGIS 3.8

Definition at line 39 of file qgsgdalutils.cpp.

createSingleBandTiffDataset()

gdal::dataset_unique_ptr QgsGdalUtils::createSingleBandTiffDataset ( const QString &  filename, GDALDataType  dataType, const QgsRectangle &  extent, int  width, int  height, const QgsCoordinateReferenceSystem &  crs  )

static

Creates a new single band TIFF dataset with given parameters.

Since

QGIS 3.8

Definition at line 69 of file qgsgdalutils.cpp.

helpCreationOptionsFormat()

QString QgsGdalUtils::helpCreationOptionsFormat ( const QString &  format )

static

Gets creation options metadata for a given format.

Since

QGIS 3.10

Definition at line 225 of file qgsgdalutils.cpp.

imageToMemoryDataset()

gdal::dataset_unique_ptr QgsGdalUtils::imageToMemoryDataset ( const QImage &  image )

static

Converts an image to a GDAL memory dataset by borrowing image data.

Warning

The image must exist unchanged for the lifetime of the returned gdal dataset!

Since

QGIS 3.12

Definition at line 100 of file qgsgdalutils.cpp.

papszFromStringList()

char ** QgsGdalUtils::papszFromStringList ( const QStringList &  list )

static

Helper function.

Since

QGIS 3.10

Definition at line 254 of file qgsgdalutils.cpp.

resampleImage()

QImage QgsGdalUtils::resampleImage ( const QImage &  image, QSize  outputSize, GDALRIOResampleAlg  resampleAlg  )

static

Resamples a QImage image using GDAL resampler.

Since

QGIS 3.12

Definition at line 174 of file qgsgdalutils.cpp.

resampleSingleBandRaster()

void QgsGdalUtils::resampleSingleBandRaster ( GDALDatasetH  hSrcDS, GDALDatasetH  hDstDS, GDALResampleAlg  resampleAlg  )

static

Resamples a single band raster to the destination dataset with different resolution (and possibly with different CRS).

Ideally the source dataset should cover the whole area or the destination dataset.

Since

QGIS 3.8

Definition at line 144 of file qgsgdalutils.cpp.

supportsRasterCreate()

bool QgsGdalUtils::supportsRasterCreate ( GDALDriverH  driver )

static

Reads whether a driver supports GDALCreate() for raster purposes.

Parameters

driver

GDAL driver

Returns

true if a driver supports GDALCreate() for raster purposes.

Definition at line 26 of file qgsgdalutils.cpp.

validateCreationOptionsFormat()

QString QgsGdalUtils::validateCreationOptionsFormat ( const QStringList &  createOptions, const QString &  format  )

static

Validates creation options for a given format, regardless of layer.

Since

QGIS 3.10

Definition at line 265 of file qgsgdalutils.cpp.

Friends And Related Function Documentation

TestQgsGdalUtils

friend class TestQgsGdalUtils

friend

Definition at line 103 of file qgsgdalutils.h.

---

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

• /build/qgis-3.12.1+28bionic/src/core/qgsgdalutils.h
• /build/qgis-3.12.1+28bionic/src/core/qgsgdalutils.cpp