QGIS Algorithm provided by SAGA Next Gen Topographic correction (sagang:topographiccorrection). —————- Arguments —————- DEM: Elevation Argument type: raster Acceptable values: - Path to a raster layer ORIGINAL: Original Image Argument type: raster Acceptable values: - Path to a raster layer CORRECTED: Corrected Image Argument type: rasterDestination Acceptable values: - Path for new raster layer AZI: Azimuth Default value: 180 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 HGT: Height Default value: 45 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: 4 Argument type: enum Available values: - 0: (0) Cosine Correction (Teillet et al. 1982) - 1: (1) Cosine Correction (Civco 1989) - 2: (2) Minnaert Correction - 3: (3) Minnaert Correction with Slope (Riano et al. 2003) - 4: (4) Minnaert Correction with Slope (Law & Nichol 2004) - 5: (5) C Correction - 6: (6) Normalization (after Civco, modified by Law & Nichol) Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' MINNAERT: Minnaert Correction Default value: 0.5 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 MAXCELLS: Maximum Cells (C Correction Analysis) Default value: 1000 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 MAXVALUE: Value Range Default value: 0 Argument type: enum Available values: - 0: (0) 1 byte (0-255) - 1: (1) 2 byte (0-65535) Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3'

sagang_topographiccorrection(
  DEM = qgisprocess:::qgis_default_value(),
  ORIGINAL = qgisprocess:::qgis_default_value(),
  CORRECTED = qgisprocess:::qgis_default_value(),
  AZI = qgisprocess:::qgis_default_value(),
  HGT = qgisprocess:::qgis_default_value(),
  METHOD = qgisprocess:::qgis_default_value(),
  MINNAERT = qgisprocess:::qgis_default_value(),
  MAXCELLS = qgisprocess:::qgis_default_value(),
  MAXVALUE = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

DEM

raster - Elevation. Path to a raster layer.

ORIGINAL

raster - Original Image. Path to a raster layer.

CORRECTED

rasterDestination - Corrected Image. Path for new raster layer.

AZI

number - Azimuth. 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.

HGT

number - 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.

METHOD

enum of ("(0) Cosine Correction (Teillet et al. 1982)", "(1) Cosine Correction (Civco 1989)", "(2) Minnaert Correction", "(3) Minnaert Correction with Slope (Riano et al. 2003)", "(4) Minnaert Correction with Slope (Law & Nichol 2004)", "(5) C Correction", "(6) Normalization (after Civco, modified by Law & Nichol)") - Method. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

MINNAERT

number - Minnaert Correction. 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.

MAXCELLS

number - Maximum Cells (C Correction Analysis). 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.

MAXVALUE

enum of ("(0) 1 byte (0-255)", "(1) 2 byte (0-65535)") - Value Range. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

...

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

  • CORRECTED - outputRaster - Corrected Image