QGIS algorithm - Multi-scale topographic position index (tpi) — sagang_multiscaletopographicpositionindextpi • qgis

QGIS Algorithm provided by SAGA Next Gen Multi-scale topographic position index (tpi) (sagang:multiscaletopographicpositionindextpi). ---------------- Arguments ---------------- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer TPI: Topographic Position Index Argument type: rasterDestination Acceptable values: - Path for new raster layer SCALE_MIN: Minimum Scale 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 SCALE_MAX: Maximum Scale 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 SCALE_NUM: Number of Scales 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

sagang_multiscaletopographicpositionindextpi(
  DEM = qgisprocess:::qgis_default_value(),
  TPI = qgisprocess:::qgis_default_value(),
  SCALE_MIN = qgisprocess:::qgis_default_value(),
  SCALE_MAX = qgisprocess:::qgis_default_value(),
  SCALE_NUM = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM: raster - Elevation. Path to a raster layer.
TPI: rasterDestination - Topographic Position Index. Path for new raster layer.
SCALE_MIN: number - Minimum Scale. 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.
SCALE_MAX: number - Maximum Scale. 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.
SCALE_NUM: number - Number of Scales. 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

TPI - outputRaster - Topographic Position Index