qgis_concavehull: QGIS algorithm - Concave hull

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

QGIS algorithm - Concave hull

Description

QGIS Algorithm provided by QGIS (native c++) Concave hull (native:concavehull). This algorithm computes the concave hull of the features from an input layer.

Usage

qgis_concavehull(
  INPUT = qgisprocess:::qgis_default_value(),
  ALPHA = qgisprocess:::qgis_default_value(),
  HOLES = qgisprocess:::qgis_default_value(),
  NO_MULTIGEOMETRY = 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.
ALPHA	number - Threshold (0-1, where 1 is equivalent with Convex Hull). 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.
HOLES	boolean - Allow holes. 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.
NO_MULTIGEOMETRY	boolean - Split multipart geometry into singleparts. 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.
OUTPUT	sink - Concave hull. 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 - Concave hull

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