grass_v_kernel_vector: QGIS algorithm - v.kernel.vector

View source: R/grass_v_kernel_vector.R

grass_v_kernel_vectorR Documentation

QGIS algorithm - v.kernel.vector

Description

QGIS Algorithm provided by GRASS v.kernel.vector (grass:v.kernel.vector). v.kernel.vector - Generates a vector density map from vector points on a vector network.

Usage

grass_v_kernel_vector(
  input = qgisprocess:::qgis_default_value(),
  net = qgisprocess:::qgis_default_value(),
  radius = qgisprocess:::qgis_default_value(),
  dsize = qgisprocess:::qgis_default_value(),
  segmax = qgisprocess:::qgis_default_value(),
  distmax = qgisprocess:::qgis_default_value(),
  multiplier = qgisprocess:::qgis_default_value(),
  node = qgisprocess:::qgis_default_value(),
  kernel = qgisprocess:::qgis_default_value(),
  .o = qgisprocess:::qgis_default_value(),
  .n = qgisprocess:::qgis_default_value(),
  .m = qgisprocess:::qgis_default_value(),
  output = 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(),
  GRASS_OUTPUT_TYPE_PARAMETER = qgisprocess:::qgis_default_value(),
  GRASS_VECTOR_DSCO = qgisprocess:::qgis_default_value(),
  GRASS_VECTOR_LCO = qgisprocess:::qgis_default_value(),
  GRASS_VECTOR_EXPORT_NOCAT = qgisprocess:::qgis_default_value(),
  ...,
  .complete_output = .complete_output_option(),
  .quiet = .quiet_option(),
  .messages = .message_option()
)

Arguments

input

source - Name of input vector map with training points. Path to a vector layer.

net

source - Name of input network vector map. Path to a vector layer.

radius

number - Kernel radius in map units. 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.

dsize

number - Discretization error in map units. 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.

segmax

number - Maximum length of segment on network. 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.

distmax

number - Maximum distance from point to network. 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.

multiplier

number - Multiply the density result by this number. 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.

node

enum of ⁠("none", "split")⁠ - Node method. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

kernel

enum of ⁠("uniform", "triangular", "epanechnikov", "quartic", "triweight", "gaussian", "cosine")⁠ - Kernel function. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

.o

boolean - Try to calculate an optimal radius with given 'radius' taken as maximum (experimental). 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: -o.

.n

boolean - Normalize values by sum of density multiplied by length of each segment.. 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: -n.

.m

boolean - Multiply the result by number of input points. 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: -m.

output

vectorDestination - Kernel. Path for new vector layer.

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.

GRASS_OUTPUT_TYPE_PARAMETER

enum of ⁠("auto", "point", "line", "area")⁠ - v.out.ogr output type. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

GRASS_VECTOR_DSCO

string - v.out.ogr output data source options (dsco). 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.

GRASS_VECTOR_LCO

string - v.out.ogr output layer options (lco). 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.

GRASS_VECTOR_EXPORT_NOCAT

boolean - Also export features without category (not labeled). Otherwise only features with category are exported. 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

  • output - outputVector - Kernel


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