QGIS Algorithm provided by SAGA Next Gen Catchment area (sagang:catchmentarea). ---------------- Arguments ---------------- ELEVATION: Elevation Argument type: raster Acceptable values: - Path to a raster layer SINKROUTE: Sink Routes (optional) Argument type: raster Acceptable values: - Path to a raster layer WEIGHTS: Weights (optional) Argument type: raster Acceptable values: - Path to a raster layer FLOW: Flow Accumulation Argument type: rasterDestination Acceptable values: - Path for new raster layer VAL_INPUT: Input for Mean over Catchment (optional) Argument type: raster Acceptable values: - Path to a raster layer VAL_MEAN: Mean over Catchment Argument type: rasterDestination Acceptable values: - Path for new raster layer ACCU_MATERIAL: Material for Accumulation (optional) Argument type: raster Acceptable values: - Path to a raster layer ACCU_TARGET: Accumulation Target Argument type: raster Acceptable values: - Path to a raster layer ACCU_TOTAL: Accumulated Material Argument type: rasterDestination Acceptable values: - Path for new raster layer ACCU_LEFT: Accumulated Material (Left Side) Argument type: rasterDestination Acceptable values: - Path for new raster layer ACCU_RIGHT: Accumulated Material (Right Side) Argument type: rasterDestination Acceptable values: - Path for new raster layer STEP: Step 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 FLOW_UNIT: Flow Accumulation Unit Default value: 1 Argument type: enum Available values: - 0: (0) number of cells - 1: (1) cell area Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' FLOW_LENGTH: Flow Path Length Argument type: rasterDestination Acceptable values: - Path for new raster layer LINEAR_VAL: Linear Flow Threshold Grid (optional) Argument type: raster Acceptable values: - Path to a raster layer LINEAR_DIR: Channel Direction (optional) Argument type: raster Acceptable values: - Path to a raster layer WEIGHT_LOSS: Loss through Negative Weights Argument type: rasterDestination Acceptable values: - Path for new raster layer METHOD: Method Default value: 4 Argument type: enum Available values: - 0: (0) Deterministic 8 - 1: (1) Rho 8 - 2: (2) Braunschweiger Reliefmodell - 3: (3) Deterministic Infinity - 4: (4) Multiple Flow Direction - 5: (5) Multiple Triangular Flow Directon - 6: (6) Multiple Maximum Downslope Gradient Based Flow Directon Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' LINEAR_DO: Thresholded Linear Flow Default value: false Argument type: boolean Acceptable values: - 1 for true/yes - 0 for false/no - 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 LINEAR_MIN: Linear Flow Threshold Default value: 500 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 CONVERGENCE: Convergence Default value: 1.1 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 NO_NEGATIVES: Prevent Negative Flow Accumulation Default value: true Argument type: boolean Acceptable values: - 1 for true/yes - 0 for false/no - 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_catchmentarea(
ELEVATION = qgisprocess:::qgis_default_value(),
SINKROUTE = qgisprocess:::qgis_default_value(),
WEIGHTS = qgisprocess:::qgis_default_value(),
FLOW = qgisprocess:::qgis_default_value(),
VAL_INPUT = qgisprocess:::qgis_default_value(),
VAL_MEAN = qgisprocess:::qgis_default_value(),
ACCU_MATERIAL = qgisprocess:::qgis_default_value(),
ACCU_TARGET = qgisprocess:::qgis_default_value(),
ACCU_TOTAL = qgisprocess:::qgis_default_value(),
ACCU_LEFT = qgisprocess:::qgis_default_value(),
ACCU_RIGHT = qgisprocess:::qgis_default_value(),
STEP = qgisprocess:::qgis_default_value(),
FLOW_UNIT = qgisprocess:::qgis_default_value(),
FLOW_LENGTH = qgisprocess:::qgis_default_value(),
LINEAR_VAL = qgisprocess:::qgis_default_value(),
LINEAR_DIR = qgisprocess:::qgis_default_value(),
WEIGHT_LOSS = qgisprocess:::qgis_default_value(),
METHOD = qgisprocess:::qgis_default_value(),
LINEAR_DO = qgisprocess:::qgis_default_value(),
LINEAR_MIN = qgisprocess:::qgis_default_value(),
CONVERGENCE = qgisprocess:::qgis_default_value(),
NO_NEGATIVES = qgisprocess:::qgis_default_value(),
...,
.complete_output = .complete_output_option(),
.quiet = .quiet_option(),
.messages = .message_option()
)raster - Elevation. Path to a raster layer.
raster - Sink Routes. Path to a raster layer.
raster - Weights. Path to a raster layer.
rasterDestination - Flow Accumulation. Path for new raster layer.
raster - Input for Mean over Catchment. Path to a raster layer.
rasterDestination - Mean over Catchment. Path for new raster layer.
raster - Material for Accumulation. Path to a raster layer.
raster - Accumulation Target. Path to a raster layer.
rasterDestination - Accumulated Material. Path for new raster layer.
rasterDestination - Accumulated Material (Left Side). Path for new raster layer.
rasterDestination - Accumulated Material (Right Side). Path for new raster layer.
number - Step. 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) number of cells", "(1) cell area") - Flow Accumulation Unit. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
rasterDestination - Flow Path Length. Path for new raster layer.
raster - Linear Flow Threshold Grid. Path to a raster layer.
raster - Channel Direction. Path to a raster layer.
rasterDestination - Loss through Negative Weights. Path for new raster layer.
enum of ("(0) Deterministic 8", "(1) Rho 8", "(2) Braunschweiger Reliefmodell", "(3) Deterministic Infinity", "(4) Multiple Flow Direction", "(5) Multiple Triangular Flow Directon", "(6) Multiple Maximum Downslope Gradient Based Flow Directon") - Method. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
boolean - Thresholded Linear Flow. 1 for true/yes. 0 for false/no. 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 - Linear Flow Threshold. 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 - Convergence. 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.
boolean - Prevent Negative Flow Accumulation. 1 for true/yes. 0 for false/no. 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.
ACCU_LEFT - outputRaster - Accumulated Material (Left Side)
ACCU_RIGHT - outputRaster - Accumulated Material (Right Side)
ACCU_TOTAL - outputRaster - Accumulated Material
FLOW - outputRaster - Flow Accumulation
FLOW_LENGTH - outputRaster - Flow Path Length
VAL_MEAN - outputRaster - Mean over Catchment
WEIGHT_LOSS - outputRaster - Loss through Negative Weights