QGIS Algorithm provided by SAGA Next Gen Saga wetness index (sagang:sagawetnessindex). ---------------- Arguments ---------------- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer WEIGHT: Weights (optional) Argument type: raster Acceptable values: - Path to a raster layer AREA: Catchment Area Argument type: rasterDestination Acceptable values: - Path for new raster layer SLOPE: Catchment Slope Argument type: rasterDestination Acceptable values: - Path for new raster layer AREA_MOD: Modified Catchment Area Argument type: rasterDestination Acceptable values: - Path for new raster layer TWI: Topographic Wetness Index Argument type: rasterDestination Acceptable values: - Path for new raster layer SUCTION: Suction Default value: 10 Argument type: number Acceptable values: - A numeric value - field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field - expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression AREA_TYPE: Type of Area Default value: 1 Argument type: enum Available values: - 0: (0) total catchment area - 1: (1) square root of catchment area - 2: (2) specific catchment area Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' SLOPE_TYPE: Type of Slope Default value: 1 Argument type: enum Available values: - 0: (0) local slope - 1: (1) catchment slope Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' SLOPE_MIN: Minimum Slope Default value: 0 Argument type: number Acceptable values: - A numeric value - field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field - expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression SLOPE_OFF: Offset Slope Default value: 0.1 Argument type: number Acceptable values: - A numeric value - field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field - expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression SLOPE_WEIGHT: Slope Weighting Default value: 1 Argument type: number Acceptable values: - A numeric value - field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field - expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression
sagang_sagawetnessindex(
DEM = qgisprocess:::qgis_default_value(),
WEIGHT = qgisprocess:::qgis_default_value(),
AREA = qgisprocess:::qgis_default_value(),
SLOPE = qgisprocess:::qgis_default_value(),
AREA_MOD = qgisprocess:::qgis_default_value(),
TWI = qgisprocess:::qgis_default_value(),
SUCTION = qgisprocess:::qgis_default_value(),
AREA_TYPE = qgisprocess:::qgis_default_value(),
SLOPE_TYPE = qgisprocess:::qgis_default_value(),
SLOPE_MIN = qgisprocess:::qgis_default_value(),
SLOPE_OFF = qgisprocess:::qgis_default_value(),
SLOPE_WEIGHT = qgisprocess:::qgis_default_value(),
...,
.complete_output = .complete_output_option(),
.quiet = .quiet_option(),
.messages = .message_option()
)raster - Elevation. Path to a raster layer.
raster - Weights. Path to a raster layer.
rasterDestination - Catchment Area. Path for new raster layer.
rasterDestination - Catchment Slope. Path for new raster layer.
rasterDestination - Modified Catchment Area. Path for new raster layer.
rasterDestination - Topographic Wetness Index. Path for new raster layer.
number - Suction. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
enum of ("(0) total catchment area", "(1) square root of catchment area", "(2) specific catchment area") - Type of Area. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
enum of ("(0) local slope", "(1) catchment slope") - Type of Slope. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
number - Minimum Slope. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
number - Offset Slope. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
number - Slope Weighting. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
further parameters passed to qgisprocess::qgis_run_algorithm()
logical specifying if complete out of qgisprocess::qgis_run_algorithm() should be used (TRUE) or first output (most likely the main) should read (FALSE). Default value is TRUE.
logical specifying if parameter .quiet for qgisprocess::qgis_run_algorithm() Default value is TRUE.
logical specifying if messages from qgisprocess::qgis_run_algorithm() should be printed (TRUE) or not (FALSE). Default value is FALSE.