QGIS core library

Contains all basic GIS functionality. More...

Classes
class	QGis
	The QGis class provides global constants for use throughout the application. More...
class	QgsAbstractFeatureIterator
	Internal feature iterator to be implemented within data providers. More...
class	QgsAbstractGeometryV2
	Abstract base class for all geometries. More...
class	QgsAction
	Utility class that encapsulates an action based on vector attributes. More...
class	QgsApplication
	Extends QApplication to provide access to QGIS specific resources such as theme paths, database paths etc. More...
class	QgsAuthCertUtils
	Utilities for working with certificates and keys. More...
class	QgsAuthConfigSslServer
	Configuration container for SSL server connection exceptions or overrides. More...
class	QgsAuthCrypto
	Funtions for hashing/checking master password and encrypt/decrypting data with password. More...
class	QgsAuthManager
	Singleton offering an interface to manage the authentication configuration database and to utilize configurations through various authentication method plugins. More...
class	QgsAuthMethod
	Abstract base class for authentication method plugins. More...
class	QgsAuthMethodConfig
	Configuration storage class for authentication method configurations. More...
class	QgsAuthMethodMetadata
	Holds data auth method key, description, and associated shared library file information. More...
class	QgsAuthMethodRegistry
	A registry / canonical manager of authentication methods. More...
class	QgsBilinearRasterResampler
	Bilinear Raster Resampler. More...
class	QgsBlurEffect
	A paint effect which blurs a source picture, using a number of different blur methods. More...
class	QgsBrightnessContrastFilter
	Brightness/contrast filter pipe for rasters. More...
class	QgsCircularStringV2
	Circular string geometry type. More...
class	QgsClipper
	A class to trim lines and polygons to within a rectangular region. More...
class	QgsClipToMinMaxEnhancement
	A raster contrast enhancement that will clip a value to the specified min/max range. More...
class	QgsColorEffect
	A paint effect which alters the colors (eg brightness, contrast) in a source picture. More...
class	QgsColorRampShader
	A ramp shader will color a raster pixel based on a list of values ranges in a ramp. More...
class	QgsColorScheme
	Abstract base class for color schemes. More...
class	QgsColorSchemeRegistry
	Registry of color schemes. More...
class	QgsCompoundCurveV2
	Compound curve geometry type. More...
class	QgsConditionalStyle
	Conditional styling for a rule. More...
class	QgsContextHelp
	Provides a context based help browser for a dialog. More...
class	QgsContrastEnhancement
	Manipulates raster pixel values so that they enhanceContrast or clip into a specified numerical range according to the specified ContrastEnhancementAlgorithm. More...
class	QgsContrastEnhancementFunction
	A contrast enhancement funcion is the base class for all raster contrast enhancements. More...
class	QgsCoordinateReferenceSystem
	Class for storing a coordinate reference system (CRS) More...
class	QgsCoordinateTransform
	Class for doing transforms between two map coordinate systems. More...
class	QgsCredentials
	Interface for requesting credentials in QGIS in GUI independent way. More...
class	QgsCsException
	Custom exception class for Coordinate Reference System related exceptions. More...
class	QgsCubicRasterResampler
	Cubic Raster Resampler. More...
class	QgsCurvePolygonV2
	Curve polygon geometry type. More...
class	QgsCurveV2
	Abstract base class for curved geometry type. More...
class	QgsCustomColorScheme
	A color scheme which contains custom colors set through QGIS app options dialog. More...
class	QgsDataDefined
	A container class for data source field mapping or expression. More...
class	QgsDataProvider
	Abstract base class for spatial data provider implementations. More...
class	QgsDataSourceURI
	Class for storing the component parts of a PostgreSQL/RDBMS datasource URI. More...
class	QgsDistanceArea
	General purpose distance and area calculator. More...
class	QgsDrawSourceEffect
	A paint effect which draws the source picture with minor or no alterations. More...
class	QgsDropShadowEffect
	A paint effect which draws an offset and optionally blurred drop shadow. More...
class	QgsEffectStack
	A paint effect which consists of a stack of other chained paint effects. More...
class	QgsError
	QgsError is container for error messages (report). More...
class	QgsErrorMessage
	QgsErrorMessage represents single error message. More...
class	QgsException
	Defines a qgis exception class. More...
class	QgsExpressionContext
	Expression contexts are used to encapsulate the parameters around which a QgsExpression should be evaluated. More...
class	QgsExpressionContextScope
	Single scope for storing variables and functions for use within a QgsExpressionContext. More...
class	QgsExpressionContextUtils
	Contains utilities for working with QgsExpressionContext objects, including methods for creating scopes for specific uses (eg project scopes, layer scopes). More...
class	QgsFeature
	The feature class encapsulates a single feature including its id, geometry and a list of field/values attributes. More...
class	QgsFeatureFilterProvider
	Abstract interface for use by classes that filter the features of a layer. More...
class	QgsFeatureIterator
	Wrapper for iterator of features from vector data provider or vector layer. More...
class	QgsFeatureStore
	Container for features with the same fields and crs. More...
class	QgsField
	Encapsulate a field in an attribute table or data source. More...
class	QgsFields
	Container of fields for a vector layer. More...
class	QgsGeometry
	A geometry is the spatial representation of a feature. More...
class	QgsGeometryCollectionV2
	Geometry collection. More...
class	QgsGeometryEditUtils
	Convenience functions for geometry editing. More...
class	QgsGeometryEngine
	Contains geometry relation and modification algorithms. More...
class	QgsGeometryFactory
	Contains geometry creation routines. More...
class	QgsGeometryUtils
	Contains various geometry utility functions. More...
class	QgsGlowEffect
	Base class for paint effect which draw a glow inside or outside a picture. More...
class	QgsGplColorScheme
	A color scheme which stores its colors in a gpl palette file. More...
class	QgsHeatmapRenderer
	A renderer which draws points as a live heatmap. More...
class	QgsHistogram
	Calculator for a numeric histogram from a list of values. More...
class	QgsHttpTransaction
	HTTP request/response manager that is redirect-aware. More...
class	QgsHueSaturationFilter
	Color and saturation filter pipe for rasters. More...
class	QgsImageOperation
	Contains operations and filters which apply to QImages. More...
class	QgsInnerGlowEffect
	A paint effect which draws a glow within a picture. More...
class	QgsInnerShadowEffect
	A paint effect which draws an offset and optionally blurred drop shadow within a picture. More...
class	QgsLabel
	A class to render labels. More...
class	QgsLabelAttributes
	A class to store attributes needed for label rendering. More...
class	QgsLabelComponent
	Maintains current state of more grainular and temporal values when creating/painting component parts of an individual label (e.g. More...
class	QgsLinearMinMaxEnhancement
	A color enhancement function that performs a linear enhanceContrast between min and max. More...
class	QgsLinearMinMaxEnhancementWithClip
	A linear enhanceContrast enhancement that first clips to min max and then enhanceContrastes linearly between min and max. More...
class	QgsLineStringV2
	Line string geometry type, with support for z-dimension and m-values. More...
class	QgsLogger
	QgsLogger is a class to print debug/warning/error messages to the console. More...
class	QgsMapLayer
	Base class for all map layer types. More...
class	QgsMapLayerRegistry
	This class tracks map layers that are currently loaded and provides a means to fetch a pointer to a map layer and delete it. More...
class	QgsMapRenderer
	A non GUI class for rendering a map layer set onto a QPainter. More...
class	QgsMapToPixel
	Perform transforms between map coordinates and device coordinates. More...
class	QgsMessageLog
	Interface for logging messages from QGIS in GUI independent way. More...
class	QgsMessageOutput
	Interface for showing messages from QGIS in GUI independent way. More...
class	QgsMultiBandColorRenderer
	Renderer for multiband images with the color components. More...
class	QgsMultiCurveV2
	Multi curve geometry collection. More...
class	QgsMultiLineStringV2
	Multi line string geometry collection. More...
class	QgsMultiPointV2
	Multi point geometry collection. More...
class	QgsMultiPolygonV2
	Multi polygon geometry collection. More...
class	QgsMultiSurfaceV2
	Multi surface geometry collection. More...
class	QgsNetworkContentFetcher
	HTTP network content fetcher. More...
class	QgsOuterGlowEffect
	A paint effect which draws a glow outside of a picture. More...
class	QgsPaintEffect
	Base class for visual effects which can be applied to QPicture drawings. More...
class	QgsPaintEffectAbstractMetadata
	Stores metadata about a paint effect class. More...
class	QgsPaintEffectMetadata
	Convenience metadata class that uses static functions to create an effect and its widget. More...
class	QgsPaintEffectRegistry
	Singleton registry of available paint effects. More...
class	QgsPalettedRasterRenderer
	Renderer for paletted raster images. More...
class	QgsPkiBundle
	Storage set for PKI bundle: SSL certificate, key, optional CA cert chain. More...
class	QgsPkiConfigBundle
	Storage set for constructed SSL certificate, key, associated with an authentication config. More...
class	QgsPluginLayer
	Base class for plugin layers. More...
class	QgsPluginLayerRegistry
	a registry of plugin layers types More...
class	QgsPluginLayerType
	class for creating plugin specific layers More...
class	QgsPoint
	A class to represent a point. More...
class	QgsPointV2
	Point geometry type, with support for z-dimension and m-values. More...
class	QgsPolygonV2
	Polygon geometry type. More...
class	QgsProject
	Reads and writes project states. More...
class	QgsProjectColorScheme
	A color scheme which contains project specific colors set through project properties dialog. More...
class	QgsProjectVersion
	A class to describe the version of a project. More...
class	QgsProperty
	An Abstract Base Class for QGIS project property hierarchies. More...
class	QgsProviderCountCalcEvent
	A custom event that is designed to be fired when a layer count has been fully calculated. More...
class	QgsProviderExtentCalcEvent
	A custom event that is designed to be fired when a layer extent has been fully calculated. More...
class	QgsProviderMetadata
	Holds data provider key, description, and associated shared library file information. More...
class	QgsProviderRegistry
	A registry / canonical manager of data providers. More...
class	QgsPseudoColorShader
	A raster color shader that highlighs low values in blue and high values in red. More...
class	QgsRaster
	Raster namespace. More...
class	QgsRasterBandStats
	The RasterBandStats struct is a container for statistics about a single raster band. More...
class	QgsRasterBlock
	Raster data container. More...
class	QgsRasterDataProvider
	Base class for raster data providers. More...
class	QgsRasterDrawer
	The drawing pipe for raster layers. More...
class	QgsRasterFileWriter
	The raster file writer which allows you to save a raster to a new file. More...
class	QgsRasterFillSymbolLayer
	A class for filling symbols with a repeated raster image. More...
class	QgsRasterHistogram
	The QgsRasterHistogram is a container for histogram of a single raster band. More...
class	QgsRasterIdentifyResult
	Raster identify results container. More...
class	QgsRasterInterface
	Base class for processing filters like renderers, reprojector, resampler etc. More...
class	QgsRasterIterator
	Iterator for sequentially processing raster cells. More...
class	QgsRasterLayer
	This class provides qgis with the ability to render raster datasets onto the mapcanvas. More...
class	QgsRasterNuller
	Raster pipe that deals with null values. More...
class	QgsRasterPipe
	Base class for processing modules. More...
class	QgsRasterPyramid
	This struct is used to store pyramid info for the raster layer. More...
class	QgsRasterRange
	Raster values range container. More...
class	QgsRasterRenderer
	Raster renderer pipe that applies colors to a raster. More...
class	QgsRasterRendererRegistry
	Registry for raster renderers. More...
struct	QgsRasterRendererRegistryEntry
	Registry for raster renderer entries. More...
class	QgsRasterResampleFilter
	Resample filter pipe for rasters. More...
class	QgsRasterResampler
	Interface for resampling rasters (e.g. More...
class	QgsRasterShader
	Interface for all raster shaders. More...
class	QgsRasterShaderFunction
	The raster shade function applies a shader to a pixel at render time - typically used to render grayscale images as false color. More...
class	QgsRasterTransparency
	Defines the list of pixel values to be considered as transparent or semi transparent when rendering rasters. More...
struct	QgsRasterViewPort
	This class provides details of the viewable area that a raster will be rendered into. More...
class	QgsRecentColorScheme
	A color scheme which contains the most recently used colors. More...
class	QgsRectangle
	A rectangle specified with double values. More...
class	QgsRenderContext
	Contains information about the context of a rendering operation. More...
class	QgsRunProcess
	A class that executes an external program/script. More...
class	QgsScaleCalculator
	Calculates scale for a given combination of canvas size, map extent, and monitor dpi. More...
class	QgsScaleExpression
	Class storing parameters of a scale expression, which is a subclass of QgsExpression for expressions which return a size or width. More...
class	QgsScopedExpressionFunction
	Expression function for use within a QgsExpressionContextScope. More...
class	QgsShadowEffect
	Base class for paint effects which offset, blurred shadows. More...
class	QgsSingleBandColorDataRenderer
	Raster renderer pipe for single band color. More...
class	QgsSingleBandGrayRenderer
	Raster renderer pipe for single band gray. More...
class	QgsSingleBandPseudoColorRenderer
	Raster renderer pipe for single band pseudocolor. More...
struct	QgsSnappingResult
	Represents the result of a snapping operation. More...
class	QgsSqlExpressionCompiler
	Generic expression compiler for translation to provider specific SQL WHERE clauses. More...
class	QgsStatisticalSummary
	Calculator for summary statistics for a list of doubles. More...
class	QgsStringUtils
	Utility functions for working with strings. More...
class	QgsTolerance
	This is the class is providing tolerance value in map unit values. More...
class	QgsTracer
	Utility class that construct a planar graph from the input vector layers and provides shortest path search for tracing of existing features. More...
class	QgsTransformEffect
	A paint effect which applies transformations (such as move, scale and rotate) to a picture. More...
class	QgsUnitTypes
	Helper functions for various unit types. More...
class	QgsUserColorScheme
	A color scheme which stores its colors in a gpl palette file within the "palettes" subfolder off the user's QGIS settings folder. More...
class	QgsVector
	A class to represent a vector. More...
class	QgsVectorDataProvider
	This is the base class for vector data providers. More...
class	QgsVectorFileWriter
	A convenience class for writing vector files to disk. More...
class	QgsVectorLayer
	Represents a vector layer which manages a vector based data sets. More...
class	QgsVectorLayerImport
	A convenience class for writing vector files to disk. More...
class	QgsVertexId
	Utility class for identifying a unique vertex within a geometry. More...
class	QgsVisibilityPresetCollection
	Container class that allows storage of visibility presets consisting of visible map layers and layer styles. More...
class	QgsWkbException
class	QgsWKBTypes
	Handles storage of information regarding WKB types and their properties. More...

Detailed Description

Contains all basic GIS functionality.