QGIS API Documentation
2.2.0-Valmiera
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Base class for raster data providers. More...
#include <qgsrasterdataprovider.h>
Signals | |
void | progress (int theType, double theProgress, QString theMessage) |
Emit a signal to notify of the progress event. | |
void | progressUpdate (int theProgress) |
Signals inherited from QgsDataProvider | |
void | fullExtentCalculated () |
This is emitted whenever the worker thread has fully calculated the PostGIS extents for this layer, and its event has been received by this provider. | |
void | dataChanged () |
This is emitted whenever an asynchronous operation has finished and the data should be redrawn. | |
void | dataChanged (int changed) |
This is emitted whenever data or metadata (e.g. |
Public Member Functions | |
QgsRasterDataProvider () | |
QgsRasterDataProvider (const QString &uri) | |
virtual | ~QgsRasterDataProvider () |
virtual QgsRasterInterface * | clone () const =0 |
Clone itself, create deep copy. | |
bool | setInput (QgsRasterInterface *input) |
Set input. | |
virtual QImage * | draw (const QgsRectangle &viewExtent, int pixelWidth, int pixelHeight)=0 |
Renders the layer as an image. | |
virtual QgsRectangle | extent ()=0 |
Get the extent of the data source. | |
virtual QGis::DataType | dataType (int bandNo) const =0 |
Returns data type for the band specified by number. | |
virtual QGis::DataType | srcDataType (int bandNo) const =0 |
Returns source data type for the band specified by number, source data type may be shorter than dataType. | |
virtual int | colorInterpretation (int theBandNo) const |
Returns data type for the band specified by number. | |
QString | colorName (int colorInterpretation) const |
virtual bool | reload () |
Reload data (data could change) | |
virtual QString | colorInterpretationName (int theBandNo) const |
virtual QgsRasterBlock * | block (int theBandNo, const QgsRectangle &theExtent, int theWidth, int theHeight) |
Read block of data using given extent and size. | |
virtual bool | srcHasNoDataValue (int bandNo) const |
virtual bool | useSrcNoDataValue (int bandNo) const |
Get source nodata value usage. | |
virtual void | setUseSrcNoDataValue (int bandNo, bool use) |
Set source nodata value usage. | |
virtual double | srcNoDataValue (int bandNo) const |
Value representing no data value. | |
virtual void | setUserNoDataValue (int bandNo, QgsRasterRangeList noData) |
virtual QgsRasterRangeList | userNoDataValues (int bandNo) const |
Get list of user no data value ranges. | |
virtual QList < QgsColorRampShader::ColorRampItem > | colorTable (int bandNo) const |
virtual QStringList | subLayers () const |
Returns the sublayers of this layer - useful for providers that manage their own layers, such as WMS. | |
virtual QImage | getLegendGraphic (double scale=0, bool forceRefresh=false) |
Returns the legend rendered as pixmap useful for that layer that need to get legend layer remotly as WMS. | |
virtual QString | buildPyramids (const QList< QgsRasterPyramid > &thePyramidList, const QString &theResamplingMethod="NEAREST", QgsRaster::RasterPyramidsFormat theFormat=QgsRaster::PyramidsGTiff, const QStringList &theConfigOptions=QStringList()) |
Create pyramid overviews. | |
virtual QList< QgsRasterPyramid > | buildPyramidList (QList< int > overviewList=QList< int >()) |
Accessor for ths raster layers pyramid list. | |
bool | hasPyramids () |
Returns true if raster has at least one populated histogram. | |
virtual QString | metadata ()=0 |
Get metadata in a format suitable for feeding directly into a subset of the GUI raster properties "Metadata" tab. | |
virtual QgsRasterIdentifyResult | identify (const QgsPoint &thePoint, QgsRaster::IdentifyFormat theFormat, const QgsRectangle &theExtent=QgsRectangle(), int theWidth=0, int theHeight=0) |
Identify raster value(s) found on the point position. | |
virtual QString | lastErrorTitle ()=0 |
Returns the caption error text for the last error in this provider. | |
virtual QString | lastError ()=0 |
Returns the verbose error text for the last error in this provider. | |
virtual QString | lastErrorFormat () |
Returns the format of the error text for the last error in this provider. | |
int | dpi () const |
Returns the dpi of the output device. | |
void | setDpi (int dpi) |
Sets the output device resolution. | |
virtual QDateTime | timestamp () const |
Time stamp of data source in the moment when data/metadata were loaded by provider. | |
virtual QDateTime | dataTimestamp () const |
Current time stamp of data source. | |
virtual bool | write (void *data, int band, int width, int height, int xOffset, int yOffset) |
Writes into the provider datasource. | |
virtual bool | setNoDataValue (int bandNo, double noDataValue) |
Set no data value on created dataset. | |
virtual bool | remove () |
Returns the formats supported by create() | |
virtual QString | validateCreationOptions (const QStringList &createOptions, QString format) |
Validates creation options for a specific dataset and destination format. | |
virtual QString | validatePyramidsConfigOptions (QgsRaster::RasterPyramidsFormat pyramidsFormat, const QStringList &theConfigOptions, const QString &fileFormat) |
Validates pyramid creation options for a specific dataset and destination format. | |
Public Member Functions inherited from QgsDataProvider | |
QgsDataProvider (QString const &uri="") | |
virtual | ~QgsDataProvider () |
We need this so the subclass destructors get called. | |
virtual QgsCoordinateReferenceSystem | crs ()=0 |
virtual void | setDataSourceUri (const QString &uri) |
Set the data source specification. | |
virtual QString | dataSourceUri () const |
Get the data source specification. | |
virtual bool | isValid ()=0 |
Returns true if this is a valid layer. | |
virtual void | updateExtents () |
Update the extents of the layer. | |
virtual bool | setSubsetString (QString subset, bool updateFeatureCount=true) |
Set the subset string used to create a subset of features in the layer. | |
virtual bool | supportsSubsetString () |
provider supports setting of subset strings | |
virtual QString | subsetString () |
Returns the subset definition string (typically sql) currently in use by the layer and used by the provider to limit the feature set. | |
virtual QStringList | subLayerStyles () const |
Sub-layer styles for each sub-layer handled by this provider, in order from bottom to top. | |
virtual uint | subLayerCount () const |
return the number of layers for the current data source | |
virtual void | setLayerOrder (const QStringList &layers) |
Reorder the list of layer names to be rendered by this provider (in order from bottom to top) | |
virtual void | setSubLayerVisibility (const QString &name, bool vis) |
Set the visibility of the given sublayer name. | |
virtual QString | name () const =0 |
return a provider name | |
virtual QString | description () const =0 |
return description | |
virtual QString | fileVectorFilters () const |
return vector file filter string | |
virtual QString | fileRasterFilters () const |
return raster file filter string | |
virtual void | reloadData () |
Reloads the data from the source. | |
virtual QgsError | error () const |
Get current status error. | |
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. | |
int | dataTypeSize (int bandNo) |
virtual int | bandCount () const =0 |
Get number of bands. | |
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 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. |
Static Public Member Functions | |
static QgsRasterDataProvider * | create (const QString &providerKey, const QString &uri, const QString &format, int nBands, QGis::DataType type, int width, int height, double *geoTransform, const QgsCoordinateReferenceSystem &crs, QStringList createOptions=QStringList()) |
Creates a new dataset with mDataSourceURI. | |
static QList< QPair< QString, QString > > | pyramidResamplingMethods (QString providerKey) |
Returns a list of pyramid resampling method name and label pairs for given provider. | |
static QString | identifyFormatName (QgsRaster::IdentifyFormat format) |
static QgsRaster::IdentifyFormat | identifyFormatFromName (QString formatName) |
static QString | identifyFormatLabel (QgsRaster::IdentifyFormat format) |
static Capability | identifyFormatToCapability (QgsRaster::IdentifyFormat format) |
Protected Member Functions | |
virtual void | readBlock (int bandNo, int xBlock, int yBlock, void *data) |
Read block of data. | |
virtual void | readBlock (int bandNo, QgsRectangle const &viewExtent, int width, int height, void *data) |
Read block of data using give extent and size. | |
bool | userNoDataValuesContains (int bandNo, double value) const |
Returns true if user no data contains value. | |
Protected Member Functions inherited from QgsDataProvider | |
void | appendError (const QgsErrorMessage &theMessage) |
Add error message. | |
void | setError (const QgsError &theError) |
Set error message. | |
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. |
Static Protected Member Functions | |
static QStringList | cStringList2Q_ (char **stringList) |
static QString | makeTableCell (const QString &value) |
static QString | makeTableCells (const QStringList &values) |
static void | initPyramidResamplingDefs () |
Protected Attributes | |
int | mDpi |
Dots per inch. | |
QList< double > | mSrcNoDataValue |
Source no data value is available and is set to be used or internal no data is available. | |
QList< bool > | mSrcHasNoDataValue |
Source no data value exists. | |
QList< bool > | mUseSrcNoDataValue |
Use source nodata value. | |
QList< QgsRasterRangeList > | mUserNoDataValue |
List of lists of user defined additional no data values for each band, indexed from 0. | |
QgsRectangle | mExtent |
Protected Attributes inherited from QgsDataProvider | |
QDateTime | mTimestamp |
Timestamp of data in the moment when the data were loaded by provider. | |
QgsError | mError |
Error. | |
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 |
Static Protected Attributes | |
static QStringList | mPyramidResamplingListGdal |
static QgsStringMap | mPyramidResamplingMapGdal |
Additional Inherited Members | |
Public Types inherited from QgsDataProvider | |
enum | DataCapability { NoDataCapabilities = 0, File = 1, Dir = 1 << 1, Database = 1 << 2, Net = 1 << 3 } |
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... |
Base class for raster data providers.
Definition at line 53 of file qgsrasterdataprovider.h.
QgsRasterDataProvider::QgsRasterDataProvider | ( | ) |
Definition at line 216 of file qgsrasterdataprovider.cpp.
QgsRasterDataProvider::QgsRasterDataProvider | ( | const QString & | uri | ) |
Definition at line 222 of file qgsrasterdataprovider.cpp.
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Definition at line 62 of file qgsrasterdataprovider.h.
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Read block of data using given extent and size.
Implements QgsRasterInterface.
Definition at line 46 of file qgsrasterdataprovider.cpp.
References QgsRasterBlock::applyNoDataValues(), QgsRasterBlock::bits(), QgsRasterInterface::capabilities(), dataType(), QgsRasterInterface::dataTypeSize(), extent(), QgsRectangle::height(), index, QgsRectangle::intersect(), QgsRasterBlock::isEmpty(), QgsRectangle::isEmpty(), QgsDebugMsg, qgsDoubleNear(), readBlock(), QgsRasterBlock::setIsNoData(), QgsRasterBlock::setIsNoDataExcept(), QgsRectangle::setXMaximum(), QgsRectangle::setXMinimum(), QgsRectangle::setYMaximum(), QgsRectangle::setYMinimum(), QgsRasterInterface::Size, srcHasNoDataValue(), srcNoDataValue(), QgsRasterBlock::subRect(), QgsRectangle::toString(), userNoDataValues(), useSrcNoDataValue(), QgsRectangle::width(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRasterInterface::xSize(), QgsRectangle::yMaximum(), QgsRectangle::yMinimum(), and QgsRasterInterface::ySize().
Referenced by identify(), and QgsRasterChecker::runTest().
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Accessor for ths raster layers pyramid list.
overviewList | used to construct the pyramid list (optional), when empty the list is defined by the provider. A pyramid list defines the POTENTIAL pyramids that can be in a raster. To know which of the pyramid layers ACTUALLY exists you need to look at the existsFlag member in each struct stored in the list. |
Definition at line 223 of file qgsrasterdataprovider.h.
Referenced by QgsRasterFileWriter::buildPyramids(), hasPyramids(), and QgsRasterLayerSaveAsDialog::populatePyramidsLevels().
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Create pyramid overviews.
Definition at line 206 of file qgsrasterdataprovider.h.
Referenced by QgsRasterFileWriter::buildPyramids().
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Clone itself, create deep copy.
Implements QgsRasterInterface.
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Returns data type for the band specified by number.
Definition at line 90 of file qgsrasterdataprovider.h.
References QgsRaster::UndefinedColorInterpretation.
Referenced by QgsRasterLayer::paletteAsPixmap(), and QgsRasterLayer::setDataProvider().
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Definition at line 159 of file qgsrasterdataprovider.h.
Referenced by QgsRasterRendererWidget::displayBandName().
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Definition at line 96 of file qgsrasterdataprovider.h.
References QgsRaster::AlphaBand, QgsRaster::BlackBand, QgsRaster::BlueBand, QgsRaster::CyanBand, QgsRaster::GrayIndex, QgsRaster::GreenBand, QgsRaster::HueBand, QgsRaster::LightnessBand, QgsRaster::MagentaBand, QgsRaster::PaletteIndex, QgsRaster::RedBand, QgsRaster::SaturationBand, QgsRaster::UndefinedColorInterpretation, QgsRaster::YCbCr_CbBand, QgsRaster::YCbCr_CrBand, QgsRaster::YCbCr_YBand, and QgsRaster::YellowBand.
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Definition at line 186 of file qgsrasterdataprovider.h.
Referenced by QgsRasterRendererRegistry::defaultRendererForDrawingStyle(), QgsSingleBandPseudoColorRendererWidget::on_mLoadFromBandButton_clicked(), QgsRasterLayer::paletteAsPixmap(), QgsRasterLayer::setDataProvider(), and QgsPalettedRendererWidget::setFromRenderer().
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Creates a new dataset with mDataSourceURI.
Definition at line 429 of file qgsrasterdataprovider.cpp.
References cast_to_fptr, QgsProviderRegistry::function(), QgsProviderRegistry::instance(), and QgsDebugMsg.
Referenced by QgsRasterFileWriter::createPartProvider(), and QgsRasterFileWriter::initOutput().
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Definition at line 235 of file qgsrasterdataprovider.cpp.
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Current time stamp of data source.
Reimplemented from QgsDataProvider.
Definition at line 301 of file qgsrasterdataprovider.h.
Referenced by QgsRasterLayer::update().
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Returns data type for the band specified by number.
Implements QgsRasterInterface.
Referenced by block(), QgsRasterRendererRegistry::defaultRendererForDrawingStyle(), QgsRasterHistogramWidget::histoAction(), QgsSingleBandGrayRendererWidget::renderer(), QgsRasterChecker::runTest(), QgsRasterLayer::setContrastEnhancement(), QgsMultiBandColorRendererWidget::setCustomMinMaxValues(), QgsRasterLayer::setDataProvider(), and QgsRasterFileWriter::writeDataRaster().
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Returns the dpi of the output device.
Definition at line 291 of file qgsrasterdataprovider.h.
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Renders the layer as an image.
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Get the extent of the data source.
Implements QgsDataProvider.
Referenced by QgsRasterResampleFilter::block(), block(), QgsRasterProjector::calc(), QgsRasterLayerSaveAsDialog::crsChanged(), identify(), QgsRasterLayer::metadata(), QgsRasterLayerSaveAsDialog::on_mOriginalExtentButton_clicked(), QgsRasterLayer::previewAsPixmap(), QgsRasterLayerSaveAsDialog::QgsRasterLayerSaveAsDialog(), QgsRasterLayer::rasterUnitsPerPixelX(), QgsRasterLayer::rasterUnitsPerPixelY(), QgsRasterChecker::runTest(), QgsRasterLayer::setDataProvider(), QgsRasterLayerSaveAsDialog::setOriginalResolution(), and QgsRasterFileWriter::writeDataRaster().
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Returns the legend rendered as pixmap useful for that layer that need to get legend layer remotly as WMS.
Definition at line 198 of file qgsrasterdataprovider.h.
Referenced by QgsLegendModel::addRasterLayerItems().
bool QgsRasterDataProvider::hasPyramids | ( | ) |
Returns true if raster has at least one populated histogram.
Definition at line 371 of file qgsrasterdataprovider.cpp.
References buildPyramidList().
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Identify raster value(s) found on the point position.
The context parameters theExtent, theWidth and theHeigh are important to identify on the same zoom level as a displayed map and to do effective caching (WCS). If context params are not specified the highest resolution is used. capabilities() may be used to test if format is supported by provider. Values are set to 'no data' or empty string if point is outside data source extent.
thePoint | coordinates in data source CRS |
theFormat | result format |
theExtent | context extent |
theWidth | context width |
theHeight | context height |
Definition at line 278 of file qgsrasterdataprovider.cpp.
References QgsRasterInterface::bandCount(), block(), QgsRasterInterface::capabilities(), ERR, extent(), QgsRectangle::height(), QgsRaster::IdentifyFormatValue, QgsRasterInterface::IdentifyValue, QgsRectangle::isEmpty(), QgsDebugMsg, QgsRasterInterface::Size, tr, QgsRasterBlock::value(), QgsRectangle::width(), QgsPoint::x(), QgsRectangle::xMinimum(), QgsRasterInterface::xSize(), QgsPoint::y(), QgsRectangle::yMaximum(), and QgsRasterInterface::ySize().
Referenced by QgsMapToolIdentify::identifyRasterLayer().
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Definition at line 482 of file qgsrasterdataprovider.cpp.
References QgsRaster::IdentifyFormatFeature, QgsRaster::IdentifyFormatHtml, QgsRaster::IdentifyFormatText, QgsRaster::IdentifyFormatUndefined, and QgsRaster::IdentifyFormatValue.
Referenced by QgsMapToolIdentify::identifyRasterLayer().
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Definition at line 465 of file qgsrasterdataprovider.cpp.
References QgsRaster::IdentifyFormatFeature, QgsRaster::IdentifyFormatHtml, QgsRaster::IdentifyFormatText, QgsRaster::IdentifyFormatValue, and tr.
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Definition at line 448 of file qgsrasterdataprovider.cpp.
References QgsRaster::IdentifyFormatFeature, QgsRaster::IdentifyFormatHtml, QgsRaster::IdentifyFormatText, and QgsRaster::IdentifyFormatValue.
Referenced by QgsRasterLayer::setDataProvider().
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Definition at line 491 of file qgsrasterdataprovider.cpp.
References QgsRasterInterface::IdentifyFeature, QgsRaster::IdentifyFormatFeature, QgsRaster::IdentifyFormatHtml, QgsRaster::IdentifyFormatText, QgsRaster::IdentifyFormatValue, QgsRasterInterface::IdentifyHtml, QgsRasterInterface::IdentifyText, QgsRasterInterface::IdentifyValue, and QgsRasterInterface::NoCapabilities.
Referenced by QgsMapToolIdentify::identifyRasterLayer().
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Returns the verbose error text for the last error in this provider.
If an operation returns 0 (e.g. draw()), this function returns the text of the error associated with the failure. Interactive users of this provider can then, for example, call a QMessageBox to display the contents.
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Returns the format of the error text for the last error in this provider.
Definition at line 343 of file qgsrasterdataprovider.cpp.
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Returns the caption error text for the last error in this provider.
If an operation returns 0 (e.g. draw()), this function returns the text of the error associated with the failure. Interactive users of this provider can then, for example, call a QMessageBox to display the contents.
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Definition at line 249 of file qgsrasterdataprovider.cpp.
Referenced by makeTableCells().
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Definition at line 255 of file qgsrasterdataprovider.cpp.
References makeTableCell().
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Get metadata in a format suitable for feeding directly into a subset of the GUI raster properties "Metadata" tab.
Definition at line 271 of file qgsrasterdataprovider.cpp.
Referenced by QgsRasterLayer::metadata().
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Emit a signal to notify of the progress event.
Emitted theProgress is in percents (0.0-100.0)
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Returns a list of pyramid resampling method name and label pairs for given provider.
Definition at line 349 of file qgsrasterdataprovider.cpp.
References cast_to_fptr, QgsProviderRegistry::function(), QgsProviderRegistry::instance(), and QgsDebugMsg.
Referenced by QgsRasterPyramidsOptionsWidget::updateUi().
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Read block of data.
Definition at line 368 of file qgsrasterdataprovider.h.
Referenced by block().
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Read block of data using give extent and size.
Definition at line 373 of file qgsrasterdataprovider.h.
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Reload data (data could change)
Definition at line 157 of file qgsrasterdataprovider.h.
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Returns the formats supported by create()
Remove dataset
Definition at line 336 of file qgsrasterdataprovider.h.
Referenced by QgsRasterFileWriter::writeDataRaster().
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Sets the output device resolution.
Definition at line 295 of file qgsrasterdataprovider.h.
Referenced by QgsRasterLayer::draw().
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Set input.
Returns true if set correctly, false if cannot use that input
Reimplemented from QgsRasterInterface.
Definition at line 67 of file qgsrasterdataprovider.h.
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Set no data value on created dataset.
bandNo | band number |
noDataValue | no data value |
Definition at line 329 of file qgsrasterdataprovider.h.
Referenced by QgsRasterFileWriter::writeDataRaster().
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Definition at line 391 of file qgsrasterdataprovider.cpp.
References QgsRasterInterface::mHistograms, QgsRasterInterface::mStatistics, mUserNoDataValue, and QgsDebugMsg.
Referenced by QgsRasterLayer::readXml().
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Set source nodata value usage.
Definition at line 34 of file qgsrasterdataprovider.cpp.
References mUseSrcNoDataValue.
Referenced by QgsRasterLayer::readXml().
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Returns source data type for the band specified by number, source data type may be shorter than dataType.
Reimplemented from QgsRasterInterface.
Referenced by QgsRasterLayerSaveAsDialog::addNoDataRow(), QgsRasterLayer::metadata(), QgsRasterHistogramWidget::refreshHistogram(), QgsRasterChecker::runTest(), and QgsRasterFileWriter::writeDataRaster().
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Definition at line 170 of file qgsrasterdataprovider.h.
Referenced by block(), QgsRasterLayer::metadata(), and QgsRasterFileWriter::writeDataRaster().
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Value representing no data value.
Definition at line 179 of file qgsrasterdataprovider.h.
Referenced by block(), QgsRasterLayer::metadata(), and QgsRasterFileWriter::writeDataRaster().
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Returns the sublayers of this layer - useful for providers that manage their own layers, such as WMS.
Reimplemented from QgsDataProvider.
Definition at line 191 of file qgsrasterdataprovider.h.
Referenced by QgsRasterLayer::subLayers().
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Time stamp of data source in the moment when data/metadata were loaded by provider.
Reimplemented from QgsDataProvider.
Definition at line 298 of file qgsrasterdataprovider.h.
References QgsDataProvider::mTimestamp.
Referenced by QgsRasterLayer::update().
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Get list of user no data value ranges.
Definition at line 184 of file qgsrasterdataprovider.h.
Referenced by block(), and QgsRasterLayer::writeXml().
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Returns true if user no data contains value.
Definition at line 508 of file qgsrasterdataprovider.cpp.
References QgsRasterRange::contains(), and mUserNoDataValue.
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Get source nodata value usage.
Definition at line 173 of file qgsrasterdataprovider.h.
Referenced by block(), and QgsRasterLayer::writeXml().
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Validates creation options for a specific dataset and destination format.
Definition at line 345 of file qgsrasterdataprovider.h.
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Validates pyramid creation options for a specific dataset and destination format.
Definition at line 350 of file qgsrasterdataprovider.h.
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Writes into the provider datasource.
Definition at line 305 of file qgsrasterdataprovider.h.
Referenced by QgsRasterFileWriter::writeDataRaster(), and QgsRasterFileWriter::writeImageRaster().
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Dots per inch.
Extended WMS (e.g. QGIS mapserver) support DPI dependent output and therefore are suited for printing. A value of -1 means it has not been set
Definition at line 387 of file qgsrasterdataprovider.h.
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Definition at line 408 of file qgsrasterdataprovider.h.
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Definition at line 411 of file qgsrasterdataprovider.h.
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Definition at line 412 of file qgsrasterdataprovider.h.
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Source no data value exists.
Definition at line 397 of file qgsrasterdataprovider.h.
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Source no data value is available and is set to be used or internal no data is available.
Used internally only Cell value representing original source no data. e.g. -9999, indexed from 0
Definition at line 394 of file qgsrasterdataprovider.h.
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List of lists of user defined additional no data values for each band, indexed from 0.
Definition at line 406 of file qgsrasterdataprovider.h.
Referenced by setUserNoDataValue(), and userNoDataValuesContains().
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Use source nodata value.
User can disable usage of source nodata value as nodata. It may happen that a value is wrongly given by GDAL as nodata (e.g. 0) and it has to be treated as regular value.
Definition at line 402 of file qgsrasterdataprovider.h.
Referenced by setUseSrcNoDataValue().