QgsRasterCalcNode Class Reference

Represents a node in a raster calculator. More...

#include <qgsrastercalcnode.h>

Public Types
enum	Operator {   opPLUS , opMINUS , opMUL , opDIV ,   opPOW , opSQRT , opSIN , opCOS ,   opTAN , opASIN , opACOS , opATAN ,   opEQ , opNE , opGT , opLT ,   opGE , opLE , opAND , opOR ,   opSIGN , opLOG , opLOG10 , opABS ,   opMAX , opMIN , opNONE }
	possible operators More...
enum	Type {   tOperator = 1 , tNumber , tRasterRef , tMatrix ,   tFunction }
	defines possible types of node More...

Public Member Functions
	QgsRasterCalcNode ()=default
	Constructor for QgsRasterCalcNode.
	QgsRasterCalcNode (const QgsRasterCalcNode &rh)=delete
	QgsRasterCalcNode cannot be copied.
	QgsRasterCalcNode (const QString &rasterName)
	QgsRasterCalcNode (double number)
	QgsRasterCalcNode (Operator op, QgsRasterCalcNode *left, QgsRasterCalcNode *right)
	QgsRasterCalcNode (QgsRasterMatrix *matrix)
	QgsRasterCalcNode (QString functionName, QVector< QgsRasterCalcNode * > functionArgs)
	Constructor for the tFunction type.
	~QgsRasterCalcNode ()
bool	calculate (QMap< QString, QgsRasterBlock * > &rasterData, QgsRasterMatrix &result, int row=-1) const
	Calculates result of raster calculation (might be real matrix or single number).
QStringList	cleanRasterReferences ()
	Returns a list of raster layer references that are addressed in the formula, without quotation marks.
QList< const QgsRasterCalcNode * >	findNodes (const QgsRasterCalcNode::Type type) const
	Returns a list of nodes of a specific type.
QgsRasterCalcNode &	operator= (const QgsRasterCalcNode &rh)=delete
	QgsRasterCalcNode cannot be copied.
QStringList	referencedLayerNames ()
	Returns a list of raster layer names that are referenced in the formula without the quotation marks.
void	setLeft (QgsRasterCalcNode *left)
void	setRight (QgsRasterCalcNode *right)
QString	toString (bool cStyle=false) const
	Returns a string representation of the expression.
Type	type () const

Static Public Member Functions
static QgsRasterCalcNode *	parseRasterCalcString (const QString &str, QString &parserErrorMsg)

Detailed Description

Represents a node in a raster calculator.

Definition at line 38 of file qgsrastercalcnode.h.

Member Enumeration Documentation

Operator

enum QgsRasterCalcNode::Operator

possible operators

Enumerator
opPLUS
opMINUS
opMUL
opDIV
opPOW
opSQRT
opSIN
opCOS
opTAN
opASIN
opACOS
opATAN
opEQ
opNE
opGT	=
opLT
opGE
opLE
opAND
opOR
opSIGN
opLOG
opLOG10
opABS
opMAX
opMIN
opNONE

Definition at line 52 of file qgsrastercalcnode.h.

Type

enum QgsRasterCalcNode::Type

defines possible types of node

Enumerator
tOperator
tNumber
tRasterRef
tMatrix
tFunction

Definition at line 42 of file qgsrastercalcnode.h.

Constructor & Destructor Documentation

QgsRasterCalcNode() [1/7]

QgsRasterCalcNode::QgsRasterCalcNode ( )

default

Constructor for QgsRasterCalcNode.

QgsRasterCalcNode() [2/7]

QgsRasterCalcNode::QgsRasterCalcNode

(

double

number

)

Definition at line 19 of file qgsrastercalcnode.cpp.

QgsRasterCalcNode() [3/7]

QgsRasterCalcNode::QgsRasterCalcNode

(

QgsRasterMatrix *

matrix

)

Definition at line 24 of file qgsrastercalcnode.cpp.

QgsRasterCalcNode() [4/7]

QgsRasterCalcNode::QgsRasterCalcNode	(	Operator	op,
		QgsRasterCalcNode *	left,
		QgsRasterCalcNode *	right
	)

Definition at line 31 of file qgsrastercalcnode.cpp.

QgsRasterCalcNode() [5/7]

QgsRasterCalcNode::QgsRasterCalcNode	(	QString	functionName,
		QVector< QgsRasterCalcNode * >	functionArgs
	)

Constructor for the tFunction type.

Definition at line 39 of file qgsrastercalcnode.cpp.

QgsRasterCalcNode() [6/7]

QgsRasterCalcNode::QgsRasterCalcNode

(

const QString &

rasterName

)

Definition at line 46 of file qgsrastercalcnode.cpp.

~QgsRasterCalcNode()

QgsRasterCalcNode::~QgsRasterCalcNode

(

)

Definition at line 54 of file qgsrastercalcnode.cpp.

QgsRasterCalcNode() [7/7]

QgsRasterCalcNode::QgsRasterCalcNode ( const QgsRasterCalcNode &  rh )

delete

QgsRasterCalcNode cannot be copied.

Member Function Documentation

calculate()

bool QgsRasterCalcNode::calculate	(	QMap< QString, QgsRasterBlock * > &	rasterData,
		QgsRasterMatrix &	result,
		int	row = -1
	)		const

Calculates result of raster calculation (might be real matrix or single number).

Parameters

rasterData	input raster data references, map of raster name to raster data block
result	destination raster matrix for calculation results
row	optional row number to calculate for calculating result by rows, or -1 to calculate entire result

Note

not available in Python bindings

Definition at line 65 of file qgsrastercalcnode.cpp.

cleanRasterReferences()

QStringList QgsRasterCalcNode::cleanRasterReferences

(

)

Returns a list of raster layer references that are addressed in the formula, without quotation marks.

Note

since QGIS 3.22

Definition at line 442 of file qgsrastercalcnode.cpp.

findNodes()

QList< const QgsRasterCalcNode * > QgsRasterCalcNode::findNodes

(

const QgsRasterCalcNode::Type

type

)

const

Returns a list of nodes of a specific type.

Since

QGIS 3.6

Definition at line 406 of file qgsrastercalcnode.cpp.

operator=()

QgsRasterCalcNode & QgsRasterCalcNode::operator= ( const QgsRasterCalcNode &  rh )

delete

QgsRasterCalcNode cannot be copied.

parseRasterCalcString()

QgsRasterCalcNode * QgsRasterCalcNode::parseRasterCalcString ( const QString &  str, QString &  parserErrorMsg  )

static

Definition at line 422 of file qgsrastercalcnode.cpp.

referencedLayerNames()

QStringList QgsRasterCalcNode::referencedLayerNames

(

)

Returns a list of raster layer names that are referenced in the formula without the quotation marks.

It uses QgsRasterCalcNode::cleanRasterReferences

Note

since QGIS 3.22

Definition at line 428 of file qgsrastercalcnode.cpp.

setLeft()

void QgsRasterCalcNode::setLeft ( QgsRasterCalcNode *  left )

inline

Definition at line 104 of file qgsrastercalcnode.h.

setRight()

void QgsRasterCalcNode::setRight ( QgsRasterCalcNode *  right )

inline

Definition at line 105 of file qgsrastercalcnode.h.

toString()

QString QgsRasterCalcNode::toString

(

bool

cStyle = false

)

const

Returns a string representation of the expression.

Parameters

cStyle

if true operators will follow C syntax

Since

QGIS 3.6

Definition at line 241 of file qgsrastercalcnode.cpp.

type()

Type QgsRasterCalcNode::type ( ) const

inline

Definition at line 101 of file qgsrastercalcnode.h.

---

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

• /build/qgis-3.36.0+99sid/src/analysis/raster/qgsrastercalcnode.h
• /build/qgis-3.36.0+99sid/src/analysis/raster/qgsrastercalcnode.cpp