QGIS algorithm - Svm classification

Source: R/sagang_svmclassification.R

QGIS Algorithm provided by SAGA Next Gen Svm classification (sagang:svmclassification). —————- Arguments —————- GRIDS: Grids Argument type: multilayer 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 SCALING: Scaling Default value: 2 Argument type: enum Available values: - 0: (0) none - 1: (1) normalize (0-1) - 2: (2) standardize Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' MESSAGE: Verbose Messages 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 MODEL_SRC: Model Source Default value: 0 Argument type: enum Available values: - 0: (0) create from training areas - 1: (1) restore from file Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' MODEL_LOAD: Restore Model from File Default value: False Argument type: file Acceptable values: - Path to a file ROI: Training Areas Argument type: source Acceptable values: - Path to a vector layer ROI_ID: Class Identifier Argument type: field Acceptable values: - The name of an existing field - ; delimited list of existing field names MODEL_SAVE: Store Model to File Default value: False Argument type: file Acceptable values: - Path to a file SVM_TYPE: SVM Type Default value: 0 Argument type: enum Available values: - 0: (0) C-SVC - 1: (1) nu-SVC - 2: (2) one-class SVM - 3: (3) epsilon-SVR - 4: (4) nu-SVR Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' KERNEL_TYPE: Kernel Type Default value: 2 Argument type: enum Available values: - 0: (0) linear - 1: (1) polynomial - 2: (2) radial basis function - 3: (3) sigmoid Acceptable values: - Number of selected option, e.g. '1' - Comma separated list of options, e.g. '1,3' DEGREE: Degree 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 GAMMA: Gamma 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 COEF0: coef0 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 COST: C 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 NU: nu-SVR 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 EPS_SVR: SVR Epsilon Default value: 0.1 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 CACHE_SIZE: Cache Size Default value: 100 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 EPS: Epsilon Default value: 0.001 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 SHRINKING: Shrinking 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 PROBABILITY: Probability Estimates 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 CROSSVAL: Cross Validation 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

sagang_svmclassification(
  GRIDS = qgisprocess:::qgis_default_value(),
  CLASSES = qgisprocess:::qgis_default_value(),
  CLASSES_LUT = qgisprocess:::qgis_default_value(),
  SCALING = qgisprocess:::qgis_default_value(),
  MESSAGE = qgisprocess:::qgis_default_value(),
  MODEL_SRC = qgisprocess:::qgis_default_value(),
  MODEL_LOAD = qgisprocess:::qgis_default_value(),
  ROI = qgisprocess:::qgis_default_value(),
  ROI_ID = qgisprocess:::qgis_default_value(),
  MODEL_SAVE = qgisprocess:::qgis_default_value(),
  SVM_TYPE = qgisprocess:::qgis_default_value(),
  KERNEL_TYPE = qgisprocess:::qgis_default_value(),
  DEGREE = qgisprocess:::qgis_default_value(),
  GAMMA = qgisprocess:::qgis_default_value(),
  COEF0 = qgisprocess:::qgis_default_value(),
  COST = qgisprocess:::qgis_default_value(),
  NU = qgisprocess:::qgis_default_value(),
  EPS_SVR = qgisprocess:::qgis_default_value(),
  CACHE_SIZE = qgisprocess:::qgis_default_value(),
  EPS = qgisprocess:::qgis_default_value(),
  SHRINKING = qgisprocess:::qgis_default_value(),
  PROBABILITY = qgisprocess:::qgis_default_value(),
  CROSSVAL = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

GRIDS

multilayer - Grids. .

CLASSES

rasterDestination - Classification. Path for new raster layer.

CLASSES_LUT

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

SCALING

enum of ("(0) none", "(1) normalize (0-1)", "(2) standardize") - Scaling. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

MESSAGE

boolean - Verbose Messages. 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.

MODEL_SRC

enum of ("(0) create from training areas", "(1) restore from file") - Model Source. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

MODEL_LOAD

file - Restore Model from File. Path to a file.

ROI

source - Training Areas. Path to a vector layer.

ROI_ID

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

MODEL_SAVE

file - Store Model to File. Path to a file.

SVM_TYPE

enum of ("(0) C-SVC", "(1) nu-SVC", "(2) one-class SVM", "(3) epsilon-SVR", "(4) nu-SVR") - SVM Type. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

KERNEL_TYPE

enum of ("(0) linear", "(1) polynomial", "(2) radial basis function", "(3) sigmoid") - Kernel Type. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

DEGREE

number - 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.

GAMMA

number - Gamma. 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.

COEF0

number - coef0. 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.

COST

number - C. 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.

NU

number - nu-SVR. 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.

EPS_SVR

number - SVR Epsilon. 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.

CACHE_SIZE

number - Cache Size. 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.

EPS

number - Epsilon. 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.

SHRINKING

boolean - Shrinking. 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.

PROBABILITY

boolean - Probability Estimates. 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.

CROSSVAL

number - Cross Validation. 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

  • CLASSES - outputRaster - Classification

  • CLASSES_LUT - outputVector - Look-up Table