QGIS API Documentation 3.39.0-Master (67e056379ed)
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qgsalgorithmzonalstatisticsfeaturebased.h
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1/***************************************************************************
2 qgsalgorithmzonalstatisticsfeaturebased.h
3 ------------------------------
4 begin : September 2020
5 copyright : (C) 2020 Matthias Kuhn
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSALGORITHMZONALSTATISTICSFEATUREBASED_H
19#define QGSALGORITHMZONALSTATISTICSFEATUREBASED_H
20
21#define SIP_NO_FILE
22
23#include "qgis_sip.h"
25
27
31class QgsZonalStatisticsFeatureBasedAlgorithm : public QgsProcessingFeatureBasedAlgorithm
32{
33
34 public:
35
36 QgsZonalStatisticsFeatureBasedAlgorithm() = default;
37 QString name() const override;
38 QString displayName() const override;
39 QStringList tags() const override;
40 QString group() const override;
41 QString groupId() const override;
42 QString shortHelpString() const override;
43 QList<int> inputLayerTypes() const override;
44 bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
45 QgsZonalStatisticsFeatureBasedAlgorithm *createInstance() const override SIP_FACTORY;
46
47 protected:
48
49 void initParameters( const QVariantMap &configuration = QVariantMap() ) override;
50 QString outputName() const override;
51 QgsFields outputFields( const QgsFields &inputFields ) const override;
52
53 bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
54 QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
55
56 private:
57 std::unique_ptr< QgsRasterInterface > mRaster;
58 int mBand = 1;
59 QString mPrefix;
62 bool mCreatedTransform = false;
63 QgsCoordinateTransform mFeatureToRasterTransform;
64 double mPixelSizeX = 0;
65 double mPixelSizeY = 0;
66 QgsFields mOutputFields;
67 QMap<Qgis::ZonalStatistic, int> mStatFieldsMapping;
68};
69
71
72#endif // QGSALGORITHMZONALSTATISTICSFEATUREBASED_H
@ All
All statistics.
QFlags< ZonalStatistic > ZonalStatistics
Statistics to be calculated during a zonal statistics operation.
Definition qgis.h:4942
This class represents a coordinate reference system (CRS).
Class for doing transforms between two map coordinate systems.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:58
Container of fields for a vector layer.
Definition qgsfields.h:46
Base class for all map layer types.
Definition qgsmaplayer.h:75
virtual QgsProcessingAlgorithm * createInstance() const =0
Creates a new instance of the algorithm class.
virtual QString group() const
Returns the name of the group this algorithm belongs to.
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
virtual QString shortHelpString() const
Returns a localised short helper string for the algorithm.
virtual QString displayName() const =0
Returns the translated algorithm name, which should be used for any user-visible display of the algor...
virtual QStringList tags() const
Returns a list of tags which relate to the algorithm, and are used to assist users in searching for s...
virtual QString name() const =0
Returns the algorithm name, used for identifying the algorithm.
Contains information about the context in which a processing algorithm is executed.
An abstract QgsProcessingAlgorithm base class for processing algorithms which operate "feature-by-fea...
bool supportInPlaceEdit(const QgsMapLayer *layer) const override
Checks whether this algorithm supports in-place editing on the given layer Default implementation for...
virtual QList< int > inputLayerTypes() const
Returns the valid input layer types for the source layer for this algorithm.
Base class for providing feedback from a processing algorithm.
#define SIP_FACTORY
Definition qgis_sip.h:76
QList< QgsFeature > QgsFeatureList