QGIS Algorithm provided by SAGA Next Gen Concentration (sagang:concentration). ---------------- Arguments ---------------- MASK: Mask Argument type: raster Acceptable values: - Path to a raster layer GRAD: Gradient Argument type: raster Acceptable values: - Path to a raster layer CONC: Concentration Argument type: rasterDestination Acceptable values: - Path for new raster layer CONC_IN: Inlet Concentration Default value: 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 CONC_OUT: Outlet Concentration Default value: 3 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 CONC_E: Concentration Approximation Threshold Default value: 0.001 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 GRAD_MIN: Minimum Gradient 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 NEIGHBOURS: Neighbourhood Default value: 0 Argument type: enum Available values: - 0: (0) Moore (8) - 1: (1) Neumann (4) - 2: (2) Optimised Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3'
sagang_concentration(
MASK = qgisprocess:::qgis_default_value(),
GRAD = qgisprocess:::qgis_default_value(),
CONC = qgisprocess:::qgis_default_value(),
CONC_IN = qgisprocess:::qgis_default_value(),
CONC_OUT = qgisprocess:::qgis_default_value(),
CONC_E = qgisprocess:::qgis_default_value(),
GRAD_MIN = qgisprocess:::qgis_default_value(),
NEIGHBOURS = qgisprocess:::qgis_default_value(),
...,
.complete_output = .complete_output_option(),
.quiet = .quiet_option(),
.messages = .message_option()
)raster - Mask. Path to a raster layer.
raster - Gradient. Path to a raster layer.
rasterDestination - Concentration. Path for new raster layer.
number - Inlet Concentration. 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 - Outlet Concentration. 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 - Concentration Approximation 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 - Minimum Gradient. 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) Moore (8)", "(1) Neumann (4)", "(2) Optimised") - Neighbourhood. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
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.