QGIS API Documentation  3.19.0-Master (c9e5875a2b)
Classes
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
 Class Bezier3D represents a bezier curve, represented by control points. More...
 
class  CloughTocherInterpolator
 This is an implementation of a Clough-Tocher interpolator based on a triangular tessellation. More...
 
class  QgsExifTools::GeoTagDetails
 Extended image geotag details. More...
 
class  HalfEdge
 HalfEdge. 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
 LinTriangleInterpolator is a class which interpolates linearly on a triangulation. More...
 
class  NormVecDecorator
 Decorator class which adds the functionality of estimating normals at the data points. More...
 
class  ParametricLine
 ParametricLine is an Interface for parametric lines. More...
 
class  QgsAlignRaster
 QgsAlignRaster takes one or more raster layers and warps (resamples) them so they have the same: More...
 
class  QgsAnalysis
 QgsAnalysis is 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  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
 This class implements a geometry check. 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
 This class manages all known geometry check factories. More...
 
class  QgsGeometryCheckResolutionMethod
 This class 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
 QgsGeometrySnapper allows a geometry to be snapped to the geometries within a different reference layer. More...
 
class  QgsGeometrySnapperSingleSource
 Makes sure that any two vertices of the vector layer are at least at 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
 This class performs graph analysis, e.g. More...
 
class  QgsGraphBuilder
 This class used for making the QgsGraph object. More...
 
class  QgsGraphBuilderInterface
 Determine interface for creating a graph. More...
 
class  QgsGraphDirector
 Determine making the graph. More...
 
class  QgsGraphEdge
 This class implements a graph edge. More...
 
class  QgsGraphVertex
 This class implements a graph vertex. More...
 
class  QgsGridFileWriter
 A class that does interpolation to a grid and writes the results to an ascii grid. 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
 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  QgsMeshTriangulation
 Class that 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
 Convenient class that can be used to obtain a datasetgroup 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
 QgsNetworkStrategy defines strategy used for calculation of the edge cost. 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
 Determine making the graph from vector line layer. More...
 
class  QgsVectorLayerFeaturePool
 A feature pool based on a vector layer. More...
 
class  QgsZonalStatistics
 A class that calculates raster statistics (count, sum, mean) for a polygon or multipolygon layer and appends the results as attributes. More...
 
class  TriangleInterpolator
 This is an interface for interpolator classes for triangulations. More...
 
class  TriDecorator
 Decorator class for Triangulations (s. More...
 
class  Vector3D
 Class Vector3D represents a 3D-Vector, capable to store 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.