gdal_buffervectors: QGIS algorithm - Buffer vectors

View source: R/gdal_buffervectors.R

gdal_buffervectorsR Documentation

QGIS algorithm - Buffer vectors

Description

QGIS Algorithm provided by GDAL Buffer vectors (gdal:buffervectors). —————- Arguments —————- INPUT: Input layer Argument type: source Acceptable values: - Path to a vector layer GEOMETRY: Geometry column name Default value: geometry Argument type: string Acceptable values: - 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 DISTANCE: Buffer distance Default value: 10 Argument type: distance 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 FIELD: Dissolve by attribute (optional) Argument type: field Acceptable values: - The name of an existing field - ; delimited list of existing field names DISSOLVE: Dissolve all results 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 EXPLODE_COLLECTIONS: Produce one feature for each geometry in any kind of geometry collection in the source file 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 OPTIONS: Additional creation options (optional) Default value: Argument type: string Acceptable values: - 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 OUTPUT: Buffer Argument type: vectorDestination Acceptable values: - Path for new vector layer

Usage

gdal_buffervectors(
  INPUT = qgisprocess:::qgis_default_value(),
  GEOMETRY = qgisprocess:::qgis_default_value(),
  DISTANCE = qgisprocess:::qgis_default_value(),
  FIELD = qgisprocess:::qgis_default_value(),
  DISSOLVE = qgisprocess:::qgis_default_value(),
  EXPLODE_COLLECTIONS = qgisprocess:::qgis_default_value(),
  OPTIONS = qgisprocess:::qgis_default_value(),
  OUTPUT = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

INPUT

source - Input layer. Path to a vector layer.

GEOMETRY

string - Geometry column 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.

DISTANCE

distance - Buffer distance. 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.

FIELD

field - Dissolve by attribute. The name of an existing field. ; delimited list of existing field names.

DISSOLVE

boolean - Dissolve all results. 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.

EXPLODE_COLLECTIONS

boolean - Produce one feature for each geometry in any kind of geometry collection in the source file. 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.

OPTIONS

string - Additional creation options. 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.

OUTPUT

vectorDestination - Buffer. Path for new vector layer.

...

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 - outputVector - Buffer


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