QGIS algorithm - Supervised classification for grids

Source: R/sagang_supervisedclassificationforgrids.R

QGIS Algorithm provided by SAGA Next Gen Supervised classification for grids (sagang:supervisedclassificationforgrids). —————- Arguments —————- GRIDS: Features Argument type: multilayer NORMALISE: Normalise 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 CLASSES: Classification Argument type: rasterDestination Acceptable values: - Path for new raster layer CLASSES_LUT: Look-up Table Argument type: vectorDestination Acceptable values: - Path for new vector layer QUALITY: Quality Argument type: rasterDestination Acceptable values: - Path for new raster layer TRAINING: Training Areas (optional) Argument type: source Acceptable values: - Path to a vector layer TRAINING_CLASS: Class Identifier Argument type: field Acceptable values: - The name of an existing field - ; delimited list of existing field names FILE_LOAD: Load Statistics from File... Default value: False Argument type: file Acceptable values: - Path to a file FILE_SAVE: Save Statistics to File... Default value: False Argument type: file Acceptable values: - Path to a file METHOD: Method Default value: 2 Argument type: enum Available values: - 0: (0) Binary Encoding - 1: (1) Parallelepiped - 2: (2) Minimum Distance - 3: (3) Mahalanobis Distance - 4: (4) Maximum Likelihood - 5: (5) Spectral Angle Mapping - 6: (6) Winner Takes All Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' THRESHOLD_DIST: Distance Threshold Default value: 0 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 THRESHOLD_ANGLE: Spectral Angle Threshold (Degree) Default value: 0 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 THRESHOLD_PROB: Probability Threshold Default value: 0 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 RELATIVE_PROB: Probability Reference Default value: 1 Argument type: enum Available values: - 0: (0) absolute - 1: (1) relative Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' WTA_0: Binary Encoding 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 WTA_1: Parallelepiped 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 WTA_2: Minimum Distance 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 WTA_3: Mahalanobis Distance 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 WTA_4: Maximum Likelihood 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 WTA_5: Spectral Angle Mapping 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_supervisedclassificationforgrids(
  GRIDS = qgisprocess:::qgis_default_value(),
  NORMALISE = qgisprocess:::qgis_default_value(),
  CLASSES = qgisprocess:::qgis_default_value(),
  CLASSES_LUT = qgisprocess:::qgis_default_value(),
  QUALITY = qgisprocess:::qgis_default_value(),
  TRAINING = qgisprocess:::qgis_default_value(),
  TRAINING_CLASS = qgisprocess:::qgis_default_value(),
  FILE_LOAD = qgisprocess:::qgis_default_value(),
  FILE_SAVE = qgisprocess:::qgis_default_value(),
  METHOD = qgisprocess:::qgis_default_value(),
  THRESHOLD_DIST = qgisprocess:::qgis_default_value(),
  THRESHOLD_ANGLE = qgisprocess:::qgis_default_value(),
  THRESHOLD_PROB = qgisprocess:::qgis_default_value(),
  RELATIVE_PROB = qgisprocess:::qgis_default_value(),
  WTA_0 = qgisprocess:::qgis_default_value(),
  WTA_1 = qgisprocess:::qgis_default_value(),
  WTA_2 = qgisprocess:::qgis_default_value(),
  WTA_3 = qgisprocess:::qgis_default_value(),
  WTA_4 = qgisprocess:::qgis_default_value(),
  WTA_5 = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

GRIDS

multilayer - Features. .

NORMALISE

boolean - Normalise. 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.

CLASSES

rasterDestination - Classification. Path for new raster layer.

CLASSES_LUT

vectorDestination - Look-up Table. Path for new vector layer.

QUALITY

rasterDestination - Quality. Path for new raster layer.

TRAINING

source - Training Areas. Path to a vector layer.

TRAINING_CLASS

field - Class Identifier. The name of an existing field. ; delimited list of existing field names.

FILE_LOAD

file - Load Statistics from File.... Path to a file.

FILE_SAVE

file - Save Statistics to File.... Path to a file.

METHOD

enum of ("(0) Binary Encoding", "(1) Parallelepiped", "(2) Minimum Distance", "(3) Mahalanobis Distance", "(4) Maximum Likelihood", "(5) Spectral Angle Mapping", "(6) Winner Takes All") - Method. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

THRESHOLD_DIST

number - Distance Threshold. 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.

THRESHOLD_ANGLE

number - Spectral Angle Threshold (Degree). 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.

THRESHOLD_PROB

number - Probability Threshold. 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.

RELATIVE_PROB

enum of ("(0) absolute", "(1) relative") - Probability Reference. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

WTA_0

boolean - Binary Encoding. 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.

WTA_1

boolean - Parallelepiped. 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.

WTA_2

boolean - Minimum Distance. 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.

WTA_3

boolean - Mahalanobis Distance. 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.

WTA_4

boolean - Maximum Likelihood. 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.

WTA_5

boolean - Spectral Angle Mapping. 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

  • CLASSES - outputRaster - Classification

  • CLASSES_LUT - outputVector - Look-up Table

  • QUALITY - outputRaster - Quality