QGIS algorithm - Overland flow

Source: R/sagang_overlandflow.R

QGIS Algorithm provided by SAGA Next Gen Overland flow (sagang:overlandflow). —————- 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 INTER_MAX: Interception Capacity (mm) (optional) Argument type: raster Acceptable values: - Path to a raster layer INTER_MAX_DEFAULT: Default 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 POND_MAX: Ponding Capacity (mm) (optional) Argument type: raster Acceptable values: - Path to a raster layer POND_MAX_DEFAULT: Default 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 INFIL_MAX: Infiltration Capacity (mm/h) (optional) Argument type: raster Acceptable values: - Path to a raster layer INFIL_MAX_DEFAULT: Default 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 INTERCEPT: Interception (mm) Argument type: rasterDestination Acceptable values: - Path for new raster layer PONDING: Ponding (mm) Argument type: rasterDestination Acceptable values: - Path for new raster layer INFILTRAT: Infiltration (mm) Argument type: rasterDestination Acceptable values: - Path for new raster layer FLOW: Flow (mm) Argument type: rasterDestination Acceptable values: - Path for new raster layer VELOCITY: Velocity (m/s) Argument type: rasterDestination Acceptable values: - Path for new raster layer PRECIP: Precipitation (mm/h) (optional) Argument type: raster Acceptable values: - Path to a raster layer PRECIP_DEFAULT: Default 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 ET_POT: Potential Evapotranspiration (mm/h) (optional) Argument type: raster Acceptable values: - Path to a raster layer ET_POT_DEFAULT: Default 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 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 TIME_STOP: Simulation Time (h) Default value: 6 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: Time Step Adjustment Default value: 0.5 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

sagang_overlandflow(
  DEM = qgisprocess:::qgis_default_value(),
  ROUGHNESS = qgisprocess:::qgis_default_value(),
  ROUGHNESS_DEFAULT = qgisprocess:::qgis_default_value(),
  INTER_MAX = qgisprocess:::qgis_default_value(),
  INTER_MAX_DEFAULT = qgisprocess:::qgis_default_value(),
  POND_MAX = qgisprocess:::qgis_default_value(),
  POND_MAX_DEFAULT = qgisprocess:::qgis_default_value(),
  INFIL_MAX = qgisprocess:::qgis_default_value(),
  INFIL_MAX_DEFAULT = qgisprocess:::qgis_default_value(),
  INTERCEPT = qgisprocess:::qgis_default_value(),
  PONDING = qgisprocess:::qgis_default_value(),
  INFILTRAT = qgisprocess:::qgis_default_value(),
  FLOW = qgisprocess:::qgis_default_value(),
  VELOCITY = qgisprocess:::qgis_default_value(),
  PRECIP = qgisprocess:::qgis_default_value(),
  PRECIP_DEFAULT = qgisprocess:::qgis_default_value(),
  ET_POT = qgisprocess:::qgis_default_value(),
  ET_POT_DEFAULT = qgisprocess:::qgis_default_value(),
  RESET = qgisprocess:::qgis_default_value(),
  TIME_STOP = qgisprocess:::qgis_default_value(),
  TIME_STEP = qgisprocess:::qgis_default_value(),
  TIME_UPDATE = 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.

INTER_MAX

raster - Interception Capacity (mm). Path to a raster layer.

INTER_MAX_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.

POND_MAX

raster - Ponding Capacity (mm). Path to a raster layer.

POND_MAX_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.

INFIL_MAX

raster - Infiltration Capacity (mm/h). Path to a raster layer.

INFIL_MAX_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.

INTERCEPT

rasterDestination - Interception (mm). Path for new raster layer.

PONDING

rasterDestination - Ponding (mm). Path for new raster layer.

INFILTRAT

rasterDestination - Infiltration (mm). Path for new raster layer.

FLOW

rasterDestination - Flow (mm). Path for new raster layer.

VELOCITY

rasterDestination - Velocity (m/s). Path for new raster layer.

PRECIP

raster - Precipitation (mm/h). Path to a raster layer.

PRECIP_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.

ET_POT

raster - Potential Evapotranspiration (mm/h). Path to a raster layer.

ET_POT_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.

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.

TIME_STOP

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 - Time Step Adjustment. 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.

...

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 - Flow (mm)

  • INFILTRAT - outputRaster - Infiltration (mm)

  • INTERCEPT - outputRaster - Interception (mm)

  • PONDING - outputRaster - Ponding (mm)

  • VELOCITY - outputRaster - Velocity (m/s)