QGIS algorithm - Topographic openness — sagang

QGIS Algorithm provided by SAGA Next Gen Topographic openness (sagang:topographicopenness). ---------------- Arguments ---------------- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer POS: Positive Openness Argument type: rasterDestination Acceptable values: - Path for new raster layer NEG: Negative Openness Argument type: rasterDestination Acceptable values: - Path for new raster layer RADIUS: Radial Limit Default value: 10000 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 METHOD: Method Default value: 1 Argument type: enum Available values: - 0: (0) multi scale - 1: (1) line tracing Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' DLEVEL: Multi Scale Factor 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 NDIRS: Number of Sectors Default value: 8 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 UNIT: Unit Default value: 0 Argument type: enum Available values: - 0: (0) Radians - 1: (1) Degree Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' NADIR: Difference from Nadir 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_topographicopenness(
  DEM = qgisprocess:::qgis_default_value(),
  POS = qgisprocess:::qgis_default_value(),
  NEG = qgisprocess:::qgis_default_value(),
  RADIUS = qgisprocess:::qgis_default_value(),
  METHOD = qgisprocess:::qgis_default_value(),
  DLEVEL = qgisprocess:::qgis_default_value(),
  NDIRS = qgisprocess:::qgis_default_value(),
  UNIT = qgisprocess:::qgis_default_value(),
  NADIR = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM: raster - Elevation. Path to a raster layer.
POS: rasterDestination - Positive Openness. Path for new raster layer.
NEG: rasterDestination - Negative Openness. Path for new raster layer.
RADIUS: number - Radial Limit. 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.
METHOD: enum of ("(0) multi scale", "(1) line tracing") - Method. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
DLEVEL: number - Multi Scale Factor. 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.
NDIRS: number - Number of Sectors. 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.
UNIT: enum of ("(0) Radians", "(1) Degree") - Unit. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
NADIR: boolean - Difference from Nadir. 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()
.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

NEG - outputRaster - Negative Openness
POS - outputRaster - Positive Openness