QGIS algorithm - r.horizon — grass_r

QGIS Algorithm provided by GRASS r.horizon (grass:r.horizon). Horizon angle computation from a digital elevation model.

grass_r_horizon(
  elevation = qgisprocess:::qgis_default_value(),
  direction = qgisprocess:::qgis_default_value(),
  step = qgisprocess:::qgis_default_value(),
  start = qgisprocess:::qgis_default_value(),
  end = qgisprocess:::qgis_default_value(),
  bufferzone = qgisprocess:::qgis_default_value(),
  e_buff = qgisprocess:::qgis_default_value(),
  w_buff = qgisprocess:::qgis_default_value(),
  n_buff = qgisprocess:::qgis_default_value(),
  s_buff = qgisprocess:::qgis_default_value(),
  maxdistance = qgisprocess:::qgis_default_value(),
  distance = qgisprocess:::qgis_default_value(),
  .d = qgisprocess:::qgis_default_value(),
  .c = qgisprocess:::qgis_default_value(),
  output = qgisprocess:::qgis_default_value(),
  GRASS_REGION_PARAMETER = qgisprocess:::qgis_default_value(),
  GRASS_REGION_CELLSIZE_PARAMETER = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

elevation: raster - Name of input elevation raster map. Path to a raster layer.
direction: number - Direction in which you want to know the horizon height. 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.
step: number - Angle step size for multidirectional horizon. 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.
start: number - Start angle for multidirectional horizon. 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.
end: number - End angle for multidirectional horizon. 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.
bufferzone: number - For horizon rasters, read from the DEM an extra buffer around the present region. 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.
e_buff: number - For horizon rasters, read from the DEM an extra buffer eastward the present region. 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.
w_buff: number - For horizon rasters, read from the DEM an extra buffer westward the present region. 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.
n_buff: number - For horizon rasters, read from the DEM an extra buffer northward the present region. 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.
s_buff: number - For horizon rasters, read from the DEM an extra buffer southward the present region. 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.
maxdistance: number - The maximum distance to consider when finding the horizon height. 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.
distance: number - Sampling distance step coefficient. 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.
.d: boolean - Write output in degrees (default is radians). 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. Original algorithm parameter name: -d.
.c: boolean - Write output in compass orientation (default is CCW, East=0). 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. Original algorithm parameter name: -c.
output: folderDestination - Folder to get horizon rasters. Path for an existing or new folder.
GRASS_REGION_PARAMETER: extent - GRASS GIS region extent. A comma delimited string of x min, x max, y min, y max. E.g. '4,10,101,105'. Path to a layer. The extent of the layer is used..
GRASS_REGION_CELLSIZE_PARAMETER: number - GRASS GIS region cellsize (leave 0 for 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.
...: 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

output - outputFolder - Folder to get horizon rasters