qgis_virtualrastercalc: QGIS algorithm - Raster calculator (virtual)

In JanCaha/r_package_qgis: An extension of package "qgisprocess" providing direct R functions for QGIS functions

QGIS algorithm - Raster calculator (virtual)

Description

QGIS Algorithm provided by QGIS (native c++) Raster calculator (virtual) (native:virtualrastercalc). Performs algebraic operations using raster layers and generates in-memory result.

Usage

qgis_virtualrastercalc(
  LAYERS = qgisprocess:::qgis_default_value(),
  EXPRESSION = qgisprocess:::qgis_default_value(),
  EXTENT = qgisprocess:::qgis_default_value(),
  CELL_SIZE = qgisprocess:::qgis_default_value(),
  CRS = qgisprocess:::qgis_default_value(),
  LAYER_NAME = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

LAYERS	multilayer - Input layers. .
EXPRESSION	expression - Expression. A valid QGIS expression string, e.g "road_name" = 'MAIN RD'.
EXTENT	extent - Output 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..
CELL_SIZE	number - Output cell size (leave empty to set automatically). 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.
CRS	crs - Output CRS. CRS as an auth ID (e.g. 'EPSG:3111'). CRS as a PROJ4 string (e.g. 'PROJ4:…'). CRS as a WKT string (e.g. 'WKT:…'). Path to a layer. The CRS of the layer is used..
LAYER_NAME	string - Output layer name. String 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 - outputRaster - Calculated

JanCaha/r_package_qgis documentation built on Nov. 3, 2024, 5:25 p.m.