analysis library

The ANALYSIS library is built on top of CORE library and provides high level tools for carrying out spatial analysis on vector and raster data. More...

Classes
class	Bezier3D
	Represents a bezier curve, represented by control points. More...
class	CloughTocherInterpolator
	An implementation of a Clough-Tocher interpolator based on a triangular tessellation. More...
class	QgsExifTools::GeoTagDetails
	Extended image geotag details. More...
class	HalfEdge
	Represents a half edge in a triangulation. More...
class	QgsGeometryCheckerUtils::LayerFeatures::iterator
	An iterator over all features in a QgsGeometryCheckerUtils::LayerFeatures. More...
class	QgsGeometryCheckerUtils::LayerFeature
	A layer feature combination to uniquely identify and access a feature in a set of layers. More...
class	QgsGeometryCheckerUtils::LayerFeatures
	Contains a set of layers and feature ids in those layers to pass to a geometry check. More...
class	LinTriangleInterpolator
	Interpolates linearly on a triangulation. More...
class	NormVecDecorator
	Decorator class which adds the functionality of estimating normals at the data points. More...
class	ParametricLine
	An interface for parametric lines used during triangulation. More...
class	Qgs3DAlgorithms
	QGIS 3D processing algorithm provider. More...
class	QgsAlignRaster
	Takes one or more raster layers and warps (resamples) them to a common grid. More...
class	QgsAnalysis
	A singleton class containing various registry and other global members related to analysis classes. More...
class	QgsAspectFilter
	Calculates aspect values in a window of 3x3 cells based on first order derivatives in x- and y- directions. More...
class	QgsBatchGeocodeAlgorithm
	A base class for batch geocoder algorithms, which takes a QgsGeocoderInterface object and exposes it as a Processing algorithm for batch geocoding operations. More...
class	QgsDerivativeFilter
	Adds the ability to calculate derivatives in x- and y-directions. More...
class	QgsDualEdgeTriangulation
	DualEdgeTriangulation is an implementation of a triangulation class based on the dual edge data structure. More...
class	QgsExifTools
	Contains utilities for working with EXIF tags in images. More...
class	QgsFeaturePool
	A feature pool is based on a vector layer and caches features. More...
class	QgsGcpGeometryTransformer
	A geometry transformer which uses an underlying Ground Control Points (GCP) based transformation to modify geometries. More...
class	QgsGcpPoint
	Contains properties of a ground control point (GCP). More...
class	QgsGcpTransformerInterface
	An interface for Ground Control Points (GCP) based transformations. More...
class	QgsGDALGeorefTransform
	Interface to gdal thin plate splines and 1st/2nd/3rd order polynomials. More...
class	QgsGeometryAngleCheck
	Angle check. More...
class	QgsGeometryAreaCheck
	Area check. More...
class	QgsGeometryCheck
	Base class for geometry checks. More...
class	QgsGeometryCheckContext
	Base configuration for geometry checks. More...
class	QgsGeometryChecker
	Manages and runs a set of geometry checks. More...
class	QgsGeometryCheckError
	This represents an error reported by a geometry check. More...
class	QgsGeometryCheckErrorSingle
	Wraps a QgsSingleGeometryError into a standard QgsGeometryCheckError. More...
class	QgsGeometryCheckerUtils
	Contains utilities required for geometry checks. More...
class	QgsGeometryCheckFactory
	A factory for geometry checks. More...
class	QgsGeometryCheckFactoryT< T >
	Template to create a factory for a geometry check. More...
class	QgsGeometryCheckRegistry
	A registry for all known geometry check factories. More...
class	QgsGeometryCheckResolutionMethod
	Implements a resolution for problems detected in geometry checks. More...
class	QgsGeometryContainedCheck
	A contained check. More...
class	QgsGeometryContainedCheckError
	A contained check error. More...
class	QgsGeometryDangleCheck
	A dangle check. More...
class	QgsGeometryDegeneratePolygonCheck
	A degenerate polygon check. More...
class	QgsGeometryDuplicateCheck
	A duplicate geometry check. More...
class	QgsGeometryDuplicateCheckError
	A duplicate geometry check error. More...
class	QgsGeometryDuplicateNodesCheck
	A duplicate nodes check. More...
class	QgsGeometryFollowBoundariesCheck
	A follow boundaries check. More...
class	QgsGeometryGapCheck
	Checks for gaps between neighbouring polygons. More...
class	QgsGeometryGapCheckError
	An error produced by a QgsGeometryGapCheck. More...
class	QgsGeometryHoleCheck
	A hole check. More...
class	QgsGeometryIsValidCheck
	Checks if geometries are valid using the backend configured in the QGIS settings. More...
class	QgsGeometryIsValidCheckError
	An error for a QgsGeometryIsValid check. More...
class	QgsGeometryLineIntersectionCheck
	A line intersection check. More...
class	QgsGeometryLineLayerIntersectionCheck
	A line layer intersection check. More...
class	QgsGeometryMissingVertexCheck
	A topology check for missing vertices. More...
class	QgsGeometryMissingVertexCheckError
	A geometry check error for a missing vertex. More...
class	QgsGeometryMultipartCheck
	A multipark check. More...
class	QgsGeometryOverlapCheck
	Checks if geometries overlap. More...
class	QgsGeometryOverlapCheckError
	An error of a QgsGeometryOverlapCheck. More...
class	QgsGeometryPointCoveredByLineCheck
	A point covered by line check. More...
class	QgsGeometryPointInPolygonCheck
	A point in polygon check. More...
class	QgsGeometrySegmentLengthCheck
	A segment length check. More...
class	QgsGeometrySelfContactCheck
	A self contact check. More...
class	QgsGeometrySelfIntersectionCheck
	A self intersection check. More...
class	QgsGeometrySelfIntersectionCheckError
	A self intersection check error. More...
class	QgsGeometrySliverPolygonCheck
	A sliver polygon check. More...
class	QgsGeometrySnapper
	Allows a geometry to be snapped to the geometries within a different reference layer. More...
class	QgsGeometrySnapperSingleSource
	Ensures that any two vertices of the vector layer are at least at a distance given by the threshold value. More...
class	QgsGeometryTypeCheck
	A geometry type check. More...
class	QgsGeometryTypeCheckError
	A geometry type check error. More...
class	QgsGraph
	Mathematical graph representation. More...
class	QgsGraphAnalyzer
	Performs graph analysis, e.g. More...
class	QgsGraphBuilder
	Used for making the QgsGraph object. More...
class	QgsGraphBuilderInterface
	Interface for creating a graph. More...
class	QgsGraphDirector
	Determine making the graph. More...
class	QgsGraphEdge
	Represents an edge in a graph. More...
class	QgsGraphVertex
	Represents vertex in a graph. More...
class	QgsGridFileWriter
	Handles interpolation to a grid and writes the results to a raster grid file. More...
class	QgsHelmertGeorefTransform
	2-dimensional Helmert transform, parametrised by isotropic scale, rotation angle and translation. More...
class	QgsHillshadeFilter
	A hillshade filter. More...
class	QgsIDWInterpolator
	Inverse distance weight interpolator. More...
class	QgsInternalGeometrySnapper
	Allows a set of geometries to be snapped to each other. More...
class	QgsInterpolator
	Interface class for interpolations. More...
class	QgsKernelDensityEstimation
	Performs Kernel Density Estimation ("heatmap") calculations on a vector layer. More...
class	QgsLeastSquares
	Utilities for calculation of least squares based transformations. More...
class	QgsLinearGeorefTransform
	A simple transform which is parametrized by a translation and anistotropic scale. More...
class	QgsMeshContours
	Exporter of contours lines or polygons from a mesh layer. More...
class	QgsMeshEditingDelaunayTriangulation
	Can be used with QgsMeshEditor::advancedEdit() to add triangle faces to a mesh created by a Delaunay triangulation on existing vertices. More...
class	QgsMeshTriangulation
	Handles mesh creation with Delaunay constrained triangulation. More...
class	QgsMeshZValueDataset
	Convenient class that can be used to obtain a dataset that represents the Z values of mesh vertices. More...
class	QgsMeshZValueDatasetGroup
	Convenience class that can be used to obtain a dataset group on vertices that represents the Z value of the mesh vertices. More...
class	QgsNativeAlgorithms
	Native c++ processing algorithm provider. More...
class	QgsNetworkDistanceStrategy
	Strategy for calculating edge cost based on its length. More...
class	QgsNetworkSpeedStrategy
	Strategy for calculating edge cost based on travel time. More...
class	QgsNetworkStrategy
	Defines strategy used for calculation of the edge cost in networks. More...
class	QgsNineCellFilter
	Base class for raster analysis methods that work with a 3x3 cell filter and calculate the value of each cell based on the cell value and the eight neighbour cells. More...
class	QgsProjectiveGeorefTransform
	A planar projective transform, expressed by a homography. More...
class	QgsRasterCalcNode
	Represents a node in a raster calculator. More...
class	QgsRasterCalculator
	Performs raster layer calculations. More...
class	QgsRasterCalculatorEntry
	Represents an individual raster layer/band number entry within a raster calculation. More...
class	QgsRasterMatrix
	Represents a matrix in a raster calculator operation. More...
class	QgsRelief
	Produces colored relief rasters from DEM. More...
class	QgsRuggednessFilter
	Calculates the ruggedness index based on a 3x3 moving window. More...
class	QgsSingleGeometryCheck
	Base class for geometry checks for a single geometry without any context of the layer or other layers in the project. More...
class	QgsSingleGeometryCheckError
	An error from a QgsSingleGeometryCheck. More...
class	QgsSlopeFilter
	Calculates slope values in a window of 3x3 cells based on first order derivatives in x- and y- directions. More...
class	QgsTinInterpolator
	Interpolation in a triangular irregular network. More...
class	QgsTotalCurvatureFilter
	Calculates total curvature as described by Wilson, Gallant (2000): terrain analysis. More...
class	QgsTriangulation
	Interface for Triangulation classes. More...
class	QgsVectorDataProviderFeaturePool
	A feature pool based on a vector data provider. More...
class	QgsVectorLayerDirector
	Determines creating a graph from a vector line layer. More...
class	QgsVectorLayerFeaturePool
	A feature pool based on a vector layer. More...
class	QgsVectorWarper
	Vector layer warper which warps vector layers based on a list of source and destination GCPs. More...
class	QgsVectorWarperTask
	A task for warping a vector layer in a background thread. More...
class	QgsZonalStatistics
	Calculates raster statistics (count, sum, mean) for a polygon or multipolygon layer and appends the results as attributes. More...
class	TriangleInterpolator
	An interface for interpolator classes for triangulations. More...
class	TriDecorator
	Decorator class for Triangulations (s. More...
class	Vector3D
	Represents a 3D-Vector, capable of storing x, y and z-coordinates in double values. More...

Detailed Description

The ANALYSIS library is built on top of CORE library and provides high level tools for carrying out spatial analysis on vector and raster data.

It also contains high level tools for building network topologies and analysing them.