Class: QgsSlopeFilter¶
-
class
qgis.analysis.
QgsSlopeFilter
¶ Bases:
QgsDerivativeFilter
Calculates slope values in a window of 3x3 cells based on first order derivatives in x- and y- directions.
Methods
Calculates the first order derivative in x-direction according to Horn (1981)
Calculates the first order derivative in y-direction according to Horn (1981)
- rtype
Tuple[float, float, float, float, float, float, float, float, float, float]
-
calcFirstDerX
(self) → Tuple[float, float, float, float, float, float, float, float, float, float]¶ Calculates the first order derivative in x-direction according to Horn (1981)
-
calcFirstDerY
(self) → Tuple[float, float, float, float, float, float, float, float, float, float]¶ Calculates the first order derivative in y-direction according to Horn (1981)
-
processNineCellWindow
(self) → Tuple[float, float, float, float, float, float, float, float, float, float]¶ - Return type
Tuple[float, float, float, float, float, float, float, float, float, float]