analysis library module

Classes

class Bezier3D

Class Bezier3D represents a bezier curve, represented by control points.

class CloughTocherInterpolator

This is an implementation of a Clough-Tocher interpolator based on a triangular tessellation.

class DualEdgeTriangulation

DualEdgeTriangulation is an implementation of a triangulation class based on the dual edge data structure.

class QgsExifTools::GeoTagDetails

Extended image geotag details.

class HalfEdge

class QgsGeometryCheckerUtils::LayerFeatures::iterator

An iterator over all features in a QgsGeometryCheckerUtils::LayerFeatures.

class QgsGeometryCheckerUtils::LayerFeature

A layer feature combination to uniquely identify and access a feature in a set of layers.

class QgsGeometryCheckerUtils::LayerFeatures

Contains a set of layers and feature ids in those layers to pass to a geometry check.

class LinTriangleInterpolator

LinTriangleInterpolator is a class which interpolates linearly on a triangulation.

class NormVecDecorator

Decorator class which adds the functionality of estimating normals at the data points.

class ParametricLine

ParametricLine is an Interface for parametric lines.

class QgsAlignRaster

QgsAlignRaster takes one or more raster layers and warps (resamples) them so they have the same:

class QgsAnalysis

QgsAnalysis is a singleton class containing various registry and other global members related to analysis classes.

class QgsAspectFilter

Calculates aspect values in a window of 3x3 cells based on first order derivatives in x- and y- directions.

class QgsDerivativeFilter

Adds the ability to calculate derivatives in x- and y-directions.

class QgsExifTools

Contains utilities for working with EXIF tags in images.

class QgsFeaturePool

A feature pool is based on a vector layer and caches features.

class QgsGeometryCheck

This class implements a geometry check.

class QgsGeometryChecker

Manages and runs a set of geometry checks.

class QgsGeometryCheckError

This represents an error reported by a geometry check.

class QgsGeometryCheckErrorSingle

Wraps a QgsSingleGeometryError into a standard QgsGeometryCheckError.

class QgsGeometryCheckerUtils

Contains utilities required for geometry checks.

class QgsGeometryCheckFactory

A factory for geometry checks.

template<class T>

class QgsGeometryCheckFactoryT

Template to create a factory for a geometry check.

class QgsGeometryCheckRegistry

This class manages all known geometry check factories.

class QgsGeometryGapCheck

Checks for gaps between neighbouring polygons.

class QgsGeometryGapCheckError

An error produced by a QgsGeometryGapCheck.

class QgsGeometryIsValidCheck

Checks if geometries are valid using the backend configured in the QGIS settings.

class QgsGeometryIsValidCheckError

An error for a QgsGeometryIsValid check.

class QgsGeometryMissingVertexCheck

A topology check for missing vertices.

class QgsGeometryOverlapCheck

Checks if geometries overlap.

class QgsGeometryOverlapCheckError

An error of a QgsGeometryOverlapCheck.

class QgsGeometrySnapper

QgsGeometrySnapper allows a geometry to be snapped to the geometries within a different reference layer.

class QgsGeometrySnapperSingleSource

Makes sure that any two vertices of the vector layer are at least at distance given by the threshold value.

class QgsGraph

Mathematical graph representation.

class QgsGraphAnalyzer

This class performs graph analysis, e.g.

class QgsGraphBuilder

This class used for making the QgsGraph object.

class QgsGraphBuilderInterface

Determine interface for creating a graph.

class QgsGraphDirector

Determine making the graph.

class QgsGraphEdge

This class implements a graph edge.

class QgsGraphVertex

This class implements a graph vertex.

class QgsGridFileWriter

A class that does interpolation to a grid and writes the results to an ascii grid.

class QgsIDWInterpolator

Inverse distance weight interpolator.

class QgsInternalGeometrySnapper

QgsInternalGeometrySnapper allows a set of geometries to be snapped to each other.

class QgsInterpolator

Interface class for interpolations.

class QgsKernelDensityEstimation

Performs Kernel Density Estimation ("heatmap") calculations on a vector layer.

class QgsMeshCalculator

Performs mesh layer calculations.

class QgsNativeAlgorithms

Native c++ processing algorithm provider.

class QgsNetworkDistanceStrategy

Strategy for calculating edge cost based on its length.

class QgsNetworkSpeedStrategy

Strategy for calculating edge cost based on travel time.

class QgsNetworkStrategy

QgsNetworkStrategy defines strategy used for calculation of the edge cost.

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.

class QgsRasterCalculator

Performs raster layer calculations.

class QgsRasterCalculatorEntry

Represents an individual raster layer/band number entry within a raster calculation.

class QgsRelief

Produces colored relief rasters from DEM.

class QgsRuggednessFilter

Calculates the ruggedness index based on a 3x3 moving window.

class QgsSingleGeometryCheck

Base class for geometry checks for a single geometry without any context of the layer or other layers in the project.

class QgsSingleGeometryCheckError

An error from a QgsSingleGeometryCheck.

class QgsSlopeFilter

Calculates slope values in a window of 3x3 cells based on first order derivatives in x- and y- directions.

class QgsTinInterpolator

Interpolation in a triangular irregular network.

class QgsTotalCurvatureFilter

Calculates total curvature as described by Wilson, Gallant (2000): terrain analysis.

class QgsVectorDataProviderFeaturePool

A feature pool based on a vector data provider.

class QgsVectorLayerDirector

Determine making the graph from vector line layer.

class QgsVectorLayerFeaturePool

A feature pool based on a vector layer.

class QgsZonalStatistics

A class that calculates raster statistics (count, sum, mean) for a polygon or multipolygon layer and appends the results as attributes.

class TriangleInterpolator

This is an interface for interpolator classes for triangulations.

class Triangulation

Interface for Triangulation classes.

class TriDecorator

Decorator class for Triangulations (s.

class Vector3D

Class Vector3D represents a 3D-Vector, capable to store x-,y- and z-coordinates in double values.