QGIS Algorithm provided by QGIS Random points inside polygons (qgis:randompointsinsidepolygons). This algorithm creates a new point layer with random points inside the polygons of a given layer. The number of points in each polygon can be defined as a fixed count or as a density value. The count/density value could also be taken from an attribute or an expression specified using the "Data defined override" functionality, so it can be different for each polygon in the input layer. A minimum distance can be specified, to avoid points being too close to each other. —————- Notes —————- - This algorithm drops existing primary keys or FID values and regenerates them in output layers.

qgis_randompointsinsidepolygons(
  INPUT = qgisprocess:::qgis_default_value(),
  STRATEGY = qgisprocess:::qgis_default_value(),
  VALUE = qgisprocess:::qgis_default_value(),
  MIN_DISTANCE = 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.

STRATEGY

enum of ("Points count", "Points density") - Sampling strategy. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.

VALUE

number - Point count or density. 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.

MIN_DISTANCE

distance - Minimum distance between points. 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.

OUTPUT

sink - Random points. 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 - Random points