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

Public Types
enum	Statistic { Count = 1, Sum = 2, Mean = 4, Median = 8, StDev = 16, Min = 32, Max = 64, Range = 128, Minority = 256, Majority = 512, Variety = 1024, Variance = 2048, All = Count \| Sum \| Mean \| Median \| StDev \| Max \| Min \| Range \| Minority \| Majority \| Variety \| Variance }
	Enumeration of flags that specify statistics to be calculated. More...

Public Member Functions
	QgsZonalStatistics (QgsVectorLayer polygonLayer, QgsRasterLayer rasterLayer, const QString &attributePrefix=QString(), int rasterBand=1, QgsZonalStatistics::Statistics stats=QgsZonalStatistics::Statistics(QgsZonalStatistics::Count\|QgsZonalStatistics::Sum\|QgsZonalStatistics::Mean))
	Constructor for QgsZonalStatistics. More...

int	calculateStatistics (QgsFeedback *feedback)
	Starts the calculation. More...

Detailed Description

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

Definition at line 40 of file qgszonalstatistics.h.

Member Enumeration Documentation

Enumeration of flags that specify statistics to be calculated.

Enumerator
Count	Pixel count.
Sum	Sum of pixel values.
Mean	Mean of pixel values.
Median	Median of pixel values.
StDev	Standard deviation of pixel values.
Min	Min of pixel values.
Max	Max of pixel values.
Range	Range of pixel values (max - min)
Minority	Minority of pixel values.
Majority	Majority of pixel values.
Variety	Variety (count of distinct) pixel values.
Variance	Variance of pixel values.
All

Definition at line 45 of file qgszonalstatistics.h.

QgsZonalStatistics::QgsZonalStatistics	(	QgsVectorLayer *	polygonLayer,
		QgsRasterLayer *	rasterLayer,
		const QString &	attributePrefix = `QString()`,
		int	rasterBand = `1`,
		QgsZonalStatistics::Statistics	stats = `QgsZonalStatistics::Statistics( QgsZonalStatistics::Count \| QgsZonalStatistics::Sum \| QgsZonalStatistics::Mean )`
	)

Definition at line 32 of file qgszonalstatistics.cpp.

int QgsZonalStatistics::calculateStatistics ( QgsFeedback * feedback )

Starts the calculation.

Definition at line 40 of file qgszonalstatistics.cpp.

The documentation for this class was generated from the following files: