R/qgis_zonalstatistics.R
qgis_zonalstatistics.RdQGIS Algorithm provided by QGIS (native c++) Zonal statistics (in place) (native:zonalstatistics). Calculates statistics for a raster layer's values for each feature of an overlapping polygon vector layer. This algorithm calculates statistics of a raster layer for each feature of an overlapping polygon vector layer. The results will be written in place.
qgis_zonalstatistics(
INPUT_RASTER = qgisprocess:::qgis_default_value(),
RASTER_BAND = qgisprocess:::qgis_default_value(),
INPUT_VECTOR = qgisprocess:::qgis_default_value(),
COLUMN_PREFIX = qgisprocess:::qgis_default_value(),
STATISTICS = qgisprocess:::qgis_default_value(),
...,
.complete_output = .complete_output_option(),
.quiet = .quiet_option(),
.messages = .message_option()
)raster - Raster layer. Path to a raster layer.
band - Raster band. Integer value representing an existing raster band number.
vector - Vector layer containing zones. Path to a vector layer.
string - Output column prefix. 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.
enum of ("Count", "Sum", "Mean", "Median", "St dev", "Minimum", "Maximum", "Range", "Minority", "Majority", "Variety", "Variance") - Statistics to calculate. Number of selected option, e.g. '1'. Comma separated list of options, e.g. '1,3'.
further parameters passed to qgisprocess::qgis_run_algorithm()
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.
logical specifying if parameter .quiet for qgisprocess::qgis_run_algorithm() Default value is TRUE.
logical specifying if messages from qgisprocess::qgis_run_algorithm() should be printed (TRUE) or not (FALSE). Default value is FALSE.