QGIS algorithm - Wind effect (windward / leeward index)

Source: R/sagang_windeffectwindwardleewardindex.R

QGIS Algorithm provided by SAGA Next Gen Wind effect (windward / leeward index) (sagang:windeffectwindwardleewardindex). —————- Arguments —————- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer DIR: Wind Direction (optional) Argument type: raster Acceptable values: - Path to a raster layer DIR_UNITS: Wind Direction Units 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' LEN: Wind Speed (optional) Argument type: raster Acceptable values: - Path to a raster layer LEN_SCALE: Scaling 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 EFFECT: Wind Effect Argument type: rasterDestination Acceptable values: - Path for new raster layer AFH: Effective Air Flow Heights Argument type: rasterDestination Acceptable values: - Path for new raster layer MAXDIST: Search Distance (km) Default value: 300 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 DIR_CONST: Constant Wind Direction Default value: 135 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 OLDVER: Old Version Default value: false 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 ACCEL: Acceleration Default value: 1.5 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 PYRAMIDS: Elevation Averaging Default value: false 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_windeffectwindwardleewardindex(
  DEM = qgisprocess:::qgis_default_value(),
  DIR = qgisprocess:::qgis_default_value(),
  DIR_UNITS = qgisprocess:::qgis_default_value(),
  LEN = qgisprocess:::qgis_default_value(),
  LEN_SCALE = qgisprocess:::qgis_default_value(),
  EFFECT = qgisprocess:::qgis_default_value(),
  AFH = qgisprocess:::qgis_default_value(),
  MAXDIST = qgisprocess:::qgis_default_value(),
  DIR_CONST = qgisprocess:::qgis_default_value(),
  OLDVER = qgisprocess:::qgis_default_value(),
  ACCEL = qgisprocess:::qgis_default_value(),
  PYRAMIDS = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM

raster - Elevation. Path to a raster layer.

DIR

raster - Wind Direction. Path to a raster layer.

DIR_UNITS

enum of ("(0) radians", "(1) degree") - Wind Direction Units. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

LEN

raster - Wind Speed. Path to a raster layer.

LEN_SCALE

number - Scaling. 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.

EFFECT

rasterDestination - Wind Effect. Path for new raster layer.

AFH

rasterDestination - Effective Air Flow Heights. Path for new raster layer.

MAXDIST

number - Search Distance (km). 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.

DIR_CONST

number - Constant Wind Direction. 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.

OLDVER

boolean - Old Version. 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.

ACCEL

number - Acceleration. 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.

PYRAMIDS

boolean - Elevation Averaging. 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

  • AFH - outputRaster - Effective Air Flow Heights

  • EFFECT - outputRaster - Wind Effect