QGIS algorithm - Overland flow (kinematic wave)

Source: R/sagang_overlandflowkinematicwave.R

QGIS Algorithm provided by SAGA Next Gen Overland flow (kinematic wave) (sagang:overlandflowkinematicwave). —————- Arguments —————- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer ROUGHNESS: Manning Roughness (optional) Argument type: raster Acceptable values: - Path to a raster layer ROUGHNESS_DEFAULT: Default Default value: 0.03 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: Runoff Argument type: rasterDestination Acceptable values: - Path for new raster layer GAUGES_FLOW: Flow at Gauges Argument type: vectorDestination Acceptable values: - Path for new vector layer GAUGES: Gauges (optional) Argument type: source Acceptable values: - Path to a vector layer TIME_SPAN: Simulation Time (h) 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 TIME_STEP: Simulation Time Step (min) 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 TIME_UPDATE: Map Update Frequency (min) 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 MAXITER: Maximum Iterations Default value: 100 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 EPSILON: Epsilon Default value: 0.0001 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 ROUTING: Flow Routing Default value: 1 Argument type: enum Available values: - 0: (0) Deterministic 8 - 1: (1) Multiple Flow Direction Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' DYNAMIC: Dynamic Water Surface 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 FLOW_RESET: Reset 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 P_RATE: Precipitation (mm) 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 P_DISTRIB: Precipitation Default value: 0 Argument type: enum Available values: - 0: (0) Homogenous - 1: (1) Above Elevation - 2: (2) Left Half Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' P_THRESHOLD: Above Elevation 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

sagang_overlandflowkinematicwave(
  DEM = qgisprocess:::qgis_default_value(),
  ROUGHNESS = qgisprocess:::qgis_default_value(),
  ROUGHNESS_DEFAULT = qgisprocess:::qgis_default_value(),
  FLOW = qgisprocess:::qgis_default_value(),
  GAUGES_FLOW = qgisprocess:::qgis_default_value(),
  GAUGES = qgisprocess:::qgis_default_value(),
  TIME_SPAN = qgisprocess:::qgis_default_value(),
  TIME_STEP = qgisprocess:::qgis_default_value(),
  TIME_UPDATE = qgisprocess:::qgis_default_value(),
  MAXITER = qgisprocess:::qgis_default_value(),
  EPSILON = qgisprocess:::qgis_default_value(),
  ROUTING = qgisprocess:::qgis_default_value(),
  DYNAMIC = qgisprocess:::qgis_default_value(),
  FLOW_RESET = qgisprocess:::qgis_default_value(),
  P_RATE = qgisprocess:::qgis_default_value(),
  P_DISTRIB = qgisprocess:::qgis_default_value(),
  P_THRESHOLD = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM

raster - Elevation. Path to a raster layer.

ROUGHNESS

raster - Manning Roughness. Path to a raster layer.

ROUGHNESS_DEFAULT

number - Default. 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

rasterDestination - Runoff. Path for new raster layer.

GAUGES_FLOW

vectorDestination - Flow at Gauges. Path for new vector layer.

GAUGES

source - Gauges. Path to a vector layer.

TIME_SPAN

number - Simulation Time (h). 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.

TIME_STEP

number - Simulation Time Step (min). 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.

TIME_UPDATE

number - Map Update Frequency (min). 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.

MAXITER

number - Maximum Iterations. 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.

EPSILON

number - Epsilon. 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.

ROUTING

enum of ("(0) Deterministic 8", "(1) Multiple Flow Direction") - Flow Routing. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

DYNAMIC

boolean - Dynamic Water Surface. 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.

FLOW_RESET

boolean - Reset. 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.

P_RATE

number - Precipitation (mm). 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.

P_DISTRIB

enum of ("(0) Homogenous", "(1) Above Elevation", "(2) Left Half") - Precipitation. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

P_THRESHOLD

number - Above Elevation. 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()

.complete_output

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.

.quiet

logical specifying if parameter .quiet for qgisprocess::qgis_run_algorithm() Default value is TRUE.

.messages

logical specifying if messages from qgisprocess::qgis_run_algorithm() should be printed (TRUE) or not (FALSE). Default value is FALSE.

Details

Outputs description

  • FLOW - outputRaster - Runoff

  • GAUGES_FLOW - outputVector - Flow at Gauges