sagang_lsfactorfieldbased: QGIS algorithm - Ls-factor, field based

In JanCaha/r_package_qgis: An extension of package "qgisprocess" providing direct R functions for QGIS functions

QGIS algorithm - Ls-factor, field based

Description

QGIS Algorithm provided by SAGA Next Gen Ls-factor, field based (sagang:lsfactorfieldbased). —————- Arguments —————- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer FIELDS: Fields (optional) Argument type: source Acceptable values: - Path to a vector layer STATISTICS: Field Statistics Argument type: vectorDestination Acceptable values: - Path for new vector layer UPSLOPE_AREA: Upslope Length Factor Argument type: rasterDestination Acceptable values: - Path for new raster layer UPSLOPE_LENGTH: Effective Flow Length Argument type: rasterDestination Acceptable values: - Path for new raster layer UPSLOPE_SLOPE: Upslope Slope Argument type: rasterDestination Acceptable values: - Path for new raster layer LS_FACTOR: LS Factor Argument type: rasterDestination Acceptable values: - Path for new raster layer BALANCE: Sediment Balance Argument type: rasterDestination Acceptable values: - Path for new raster layer METHOD: LS Calculation Default value: 0 Argument type: enum Available values: - 0: (0) Moore & Nieber 1989 - 1: (1) Desmet & Govers 1996 - 2: (2) Wischmeier & Smith 1978 Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' METHOD_SLOPE: Type of Slope Default value: 0 Argument type: enum Available values: - 0: (0) local slope - 1: (1) distance weighted average catchment slope Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' METHOD_AREA: Specific Catchment Area Default value: 1 Argument type: enum Available values: - 0: (0) specific catchment area (contour length simply as cell size) - 1: (1) specific catchment area (contour length dependent on aspect) - 2: (2) catchment length (square root of catchment area) - 3: (3) effective flow length Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' STOP_AT_EDGE: Stop at Edge 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 EROSIVITY: Rill/Interrill Erosivity 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 STABILITY: Stability Default value: 0 Argument type: enum Available values: - 0: (0) stable - 1: (1) instable (thawing) Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3'

Usage

sagang_lsfactorfieldbased(
  DEM = qgisprocess:::qgis_default_value(),
  FIELDS = qgisprocess:::qgis_default_value(),
  STATISTICS = qgisprocess:::qgis_default_value(),
  UPSLOPE_AREA = qgisprocess:::qgis_default_value(),
  UPSLOPE_LENGTH = qgisprocess:::qgis_default_value(),
  UPSLOPE_SLOPE = qgisprocess:::qgis_default_value(),
  LS_FACTOR = qgisprocess:::qgis_default_value(),
  BALANCE = qgisprocess:::qgis_default_value(),
  METHOD = qgisprocess:::qgis_default_value(),
  METHOD_SLOPE = qgisprocess:::qgis_default_value(),
  METHOD_AREA = qgisprocess:::qgis_default_value(),
  STOP_AT_EDGE = qgisprocess:::qgis_default_value(),
  EROSIVITY = qgisprocess:::qgis_default_value(),
  STABILITY = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM	raster - Elevation. Path to a raster layer.
FIELDS	source - Fields. Path to a vector layer.
STATISTICS	vectorDestination - Field Statistics. Path for new vector layer.
UPSLOPE_AREA	rasterDestination - Upslope Length Factor. Path for new raster layer.
UPSLOPE_LENGTH	rasterDestination - Effective Flow Length. Path for new raster layer.
UPSLOPE_SLOPE	rasterDestination - Upslope Slope. Path for new raster layer.
LS_FACTOR	rasterDestination - LS Factor. Path for new raster layer.
BALANCE	rasterDestination - Sediment Balance. Path for new raster layer.
METHOD	enum of ⁠("(0) Moore & Nieber 1989", "(1) Desmet & Govers 1996", "(2) Wischmeier & Smith 1978")⁠ - LS Calculation. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
METHOD_SLOPE	enum of ⁠("(0) local slope", "(1) distance weighted average catchment slope")⁠ - Type of Slope. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
METHOD_AREA	enum of ⁠("(0) specific catchment area (contour length simply as cell size)", "(1) specific catchment area (contour length dependent on aspect)", "(2) catchment length (square root of catchment area)", "(3) effective flow length")⁠ - Specific Catchment Area. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
STOP_AT_EDGE	boolean - Stop at Edge. 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.
EROSIVITY	number - Rill/Interrill Erosivity. 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.
STABILITY	enum of ⁠("(0) stable", "(1) instable (thawing)")⁠ - Stability. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
...	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

• BALANCE - outputRaster - Sediment Balance

• LS_FACTOR - outputRaster - LS Factor

• STATISTICS - outputVector - Field Statistics

• UPSLOPE_AREA - outputRaster - Upslope Length Factor

• UPSLOPE_LENGTH - outputRaster - Effective Flow Length

• UPSLOPE_SLOPE - outputRaster - Upslope Slope

JanCaha/r_package_qgis documentation built on July 6, 2024, 3:05 p.m.