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23.10. Input and output types for Processing Algorithms — QGIS Documentation documentation

Annotation layer

QgsProcessingParameterAnnotationLayer

alg.ANNOTATION_LAYER

An annotation layer

Area

QgsProcessingParameterArea

A numeric parameter representing an area measure

Authentication Configuration

QgsProcessingParameterAuthConfig

alg.AUTH_CFG

Allows users to select from available authentication configurations or create new authentication configurations

Raster band

QgsProcessingParameterBand

alg.BAND

A band of a raster layer

Boolean

QgsProcessingParameterBoolean

alg.BOOL

A boolean value

Connection Name

QgsProcessingParameterProviderConnection

A selection from available registered connections for a particular data provider

Color

QgsProcessingParameterColor

alg.COLOR

A color

Coordinate Operation

QgsProcessingParameterCoordinateOperation

alg.COORDINATE_OPERATION

A coordinate operation (for CRS transformations)

CRS

QgsProcessingParameterCrs

alg.CRS

A Coordinate Reference System

Database Schema

QgsProcessingParameterDatabaseSchema

alg.DATABASE_SCHEMA

A database schema

Database Table

QgsProcessingParameterDatabaseTable

alg.DATABASE_TABLE

A database table

Date

ProcessingDateTimeParameterDataType.Date

alg.DATE

A pure date

Datetime

ProcessingDateTimeParameterDataType.DateTime

alg.DATETIME

A datetime

Distance

QgsProcessingParameterDistance

alg.DISTANCE

A double numeric parameter for distance values

DXF Layers

QgsProcessingParameterDxfLayers

A list of vector layers to export as DXF file

Enum

QgsProcessingParameterEnum

alg.ENUM

An enumeration, allowing for selection from a set of predefined values

Expression

QgsProcessingParameterExpression

alg.EXPRESSION

An expression

Extent

QgsProcessingParameterExtent

alg.EXTENT

A spatial extent defined by xmin, xmax, ymin, ymax

QgsProcessingParameterField

alg.FIELD

A field in the attribute table of a vector layer

Field Aggregates

QgsProcessingParameterAggregate

A parameter for “aggregate” configurations, which consist of a definition of desired output fields, types, and aggregate used to populate them

Fields Mapper

QgsProcessingParameterFieldMapping

A parameter for “field mapping” configurations, which consist of a definition of desired output fields, types, and expressions used to populate them

File/Folder

QgsProcessingParameterFile

alg.FILE

A filename of an existing file

QgsProcessingParameterFileDestination

alg.FILE_DEST

A filename for a newly created output file

QgsProcessingParameterFolderDestination

alg.FOLDER_DEST

A folder (destination folder)

Geometry

QgsProcessingParameterGeometry

alg.GEOMETRY

A geometry

ProcessingNumberParameterType.Integer

alg.INT

An integer

Print Layout

QgsProcessingParameterLayout

alg.LAYOUT

A layout

Print Layout Item

QgsProcessingParameterLayoutItem

alg.LAYOUT_ITEM

A layout item

Map Layer

QgsProcessingParameterMapLayer

alg.MAPLAYER

A map layer

Map Theme

QgsProcessingParameterMapTheme

alg.MAP_THEME

A project map theme

Matrix

QgsProcessingParameterMatrix

alg.MATRIX

A matrix

Mesh Dataset Groups

QgsProcessingParameterMeshDatasetGroups

Dataset groups of mesh layer

Mesh Dataset Time

QgsProcessingParameterMeshDatasetTime

Dataset index from a mesh layer by time setting

Mesh Layer

QgsProcessingParameterMeshLayer

alg.MESH_LAYER

A mesh layer

Multiple Input

QgsProcessingParameterMultipleLayers

alg.MULTILAYER

A set of layers

Number

ProcessingNumberParameterType.Double

alg.NUMBER

A numerical value

Point

QgsProcessingParameterPoint

alg.POINT

A point

Point Cloud Attribute

QgsProcessingParameterPointCloudAttribute

An attribute from a point cloud layer

QgsProcessingParameterPointCloudDestination

alg.POINTCLOUD_LAYER_DEST

A point cloud layer destination parameter, for specifying the destination path for a point cloud layer created by the algorithm

Point Cloud Layer

QgsProcessingParameterPointCloudLayer

alg.POINTCLOUD_LAYER

A point cloud layer

QgsProcessingParameterProviderConnection

alg.PROVIDER_CONNECTION

An available connection for a database provider

Range

QgsProcessingParameterRange

alg.RANGE

A number range

Raster Layer

QgsProcessingParameterRasterLayer

alg.RASTER_LAYER

A raster layer

QgsProcessingParameterRasterDestination

alg.RASTER_LAYER_DEST

A raster layer destination parameter, for specifying the destination path for a raster layer created by the algorithm

Scale

QgsProcessingParameterScale

alg.SCALE

A map scale

QgsProcessingParameterFeatureSink

alg.SINK

A feature sink

String

QgsProcessingParameterString

alg.STRING

A text string

TIN Creation Layers

QgsProcessingParameterTinInputLayers

Selection of multiple layers to create a TIN with vertices and/or break lines

Time

ProcessingDateTimeParameterDataType.Time

alg.TIME

A pure time

Vector Features

QgsProcessingParameterFeatureSource

alg.SOURCE

A feature source

Vector Layer

QgsProcessingParameterVectorLayer

alg.VECTOR_LAYER

A vector layer

QgsProcessingParameterVectorDestination

alg.VECTOR_LAYER_DEST

A vector layer destination parameter, for specifying the destination path for a vector layer created by the algorithm

Vector Tile Writer Layers

QgsProcessingParameterVectorTileDestination

A vector tile layer destination parameter, for specifying the destination path for a vector tile layer created by the algorithm

Volume

QgsProcessingParameterVolume

A numeric parameter representing a volume measure


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