grass_v_univar: QGIS algorithm - v.univar

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

QGIS algorithm - v.univar

Description

QGIS Algorithm provided by GRASS v.univar (grass:v.univar). Calculates univariate statistics for attribute. Variance and standard deviation is calculated only for points if specified.

Usage

grass_v_univar(
  map = qgisprocess:::qgis_default_value(),
  type = qgisprocess:::qgis_default_value(),
  where = qgisprocess:::qgis_default_value(),
  column = qgisprocess:::qgis_default_value(),
  percentile = qgisprocess:::qgis_default_value(),
  .g = qgisprocess:::qgis_default_value(),
  .e = qgisprocess:::qgis_default_value(),
  .w = qgisprocess:::qgis_default_value(),
  .d = qgisprocess:::qgis_default_value(),
  html = qgisprocess:::qgis_default_value(),
  GRASS_REGION_PARAMETER = qgisprocess:::qgis_default_value(),
  GRASS_SNAP_TOLERANCE_PARAMETER = qgisprocess:::qgis_default_value(),
  GRASS_MIN_AREA_PARAMETER = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

map	source - Name of input vector map. Path to a vector layer.
type	enum of ⁠("point", "line", "boundary", "centroid", "area")⁠ - Input feature type. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
where	string - WHERE conditions of SQL statement without 'where' keyword. 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.
column	field - Column name. The name of an existing field. ; delimited list of existing field names.
percentile	number - Percentile to calculate. 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.
.g	boolean - Print the stats in shell script style. 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. Original algorithm parameter name: -g.
.e	boolean - Calculate extended statistics. 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. Original algorithm parameter name: -e.
.w	boolean - Weigh by line length or area size. 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. Original algorithm parameter name: -w.
.d	boolean - Calculate geometric distances instead of attribute statistics. 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. Original algorithm parameter name: -d.
html	fileDestination - Statistics. Path for new file.
GRASS_REGION_PARAMETER	extent - GRASS GIS region extent. A comma delimited string of x min, x max, y min, y max. E.g. '4,10,101,105'. Path to a layer. The extent of the layer is used..
GRASS_SNAP_TOLERANCE_PARAMETER	number - v.in.ogr snap tolerance (-1 = no snap). 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.
GRASS_MIN_AREA_PARAMETER	number - v.in.ogr min area. 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

• html - outputHtml - Statistics

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