QGIS Algorithm provided by QGIS (native c++) Zonal histogram (native:zonalhistogram). This algorithm appends fields representing counts of each unique value from a raster layer contained within zones defined as polygons.
qgis_zonalhistogram(
INPUT_RASTER = qgisprocess:::qgis_default_value(),
RASTER_BAND = qgisprocess:::qgis_default_value(),
INPUT_VECTOR = qgisprocess:::qgis_default_value(),
COLUMN_PREFIX = qgisprocess:::qgis_default_value(),
OUTPUT = qgisprocess:::qgis_default_value(),
...,
.complete_output = .complete_output_option(),
.quiet = .quiet_option(),
.messages = .message_option()
)
raster
- Raster layer. Path to a raster layer.
band
- Band number. Integer value representing an existing raster band number.
source
- 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.
sink
- Output zones. Path for new vector layer.
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
.