Vector general¶

Description¶

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Parameters¶

Input layer [vector: any]

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Outputs¶

Output [vector]

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Console usage¶

processing.runalg('qgis:deleteduplicategeometries', input, output)

See also¶

Description¶

This algorithm allows to execute an SQL query on a set of input vector layers thanks to the virtual layer provider.

Parameters¶

Input layer [vector: any]

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Additional data sources [vector]

Data sources that have to be loaded for reference in the SQL query. Any layer already loaded in QGIS is available in the query through its name or id. But for use of this algorithm in a script, input sources should be set here. Each input data source can be referred to as input1 ... inputN as layer names in the query.

Query [string]

The SQL query. SQLite, Spatialite and QGIS expression functions can be used here.

Unique identifier field [string]

Optional parameter to specify which field of the query should be used as a unique id.

Geometry field [string]

Optional parameter to specify which field should be considered as the geometry field, if one wants to avoid possibly slow autodetection.

Geometry type [selection]

Optional parameter to specify the type of the geometry if one wants to avoid possibly slow autodetection.

Geometry types:

• 0 — Autodetect
• 1 — NoGeometry
• 2 — Point
• 3 — LineString
• 4 — Polygon
• 5 — MultiPoint
• 6 — MultiLineString
• 7 — MultiPolygon

Geometry CRS [crs]

Optional parameter to specify the coordinate system of the geometry if one wants to avoid possibly slow autodetection.

Outputs¶

Output [vector]

Output vector

Console usage¶

processing.runalg('qgis:executesql', inputs, query, uid, geom_field, geom_type, crs)

See also¶

Description¶

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Parameters¶

Target vector layer [vector: any]

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Join vector layer [vector: any]

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Geometric predicate [geometrypredicate]

Predicate name or list of predicate names interpreted in an OR like manner.

Possible values: [‘intersects’, ‘contains’, ‘equals’, ‘touches’, ‘overlaps’, ‘within’, ‘crosses’]

Default: []

Attribute summary [selection]

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Options:

• 0 — Take attributes of the first located feature
• 1 — Take summary of intersecting features

Default: 0

Statistics for summary (comma separated) [string]

Optional.

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Default: sum,mean,min,max,median

Joined table [selection]

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Options:

• 0 — Only keep matching records
• 1 — Keep all records (including non-matching target records)

Default: 0

Outputs¶

Joined layer [vector]

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Console usage¶

processing.runalg('qgis:joinattributesbylocation', target, join, predicate, summary, stats, keep, output)

See also¶

Description¶

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Parameters¶

Input layer [vector: any]

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Input layer 2 [table]

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Table field [tablefield: any]

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Table field 2 [tablefield: any]

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Outputs¶

Output layer [vector]

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Console usage¶

processing.runalg('qgis:joinattributestable', input_layer, input_layer_2, table_field, table_field_2, output_layer)

See also¶

Description¶

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Parameters¶

Input layer 1 [vector: any]

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Input layer 2 [vector: any]

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Outputs¶

Output [vector]

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Console usage¶

processing.runalg('qgis:mergevectorlayers', layer1, layer2, output)

See also¶

Description¶

This algorithm merge the layers of different data sources in a single vrt file This algorithm is especially useful in case another algorithm needs multiple layers but accept only one vrt in which the layers are specified

Parameters¶

Input datasources [multipleinput: any vectors]

Input datasources to merge in a single VRT input_datasources is a single string with all path ”;” separated as “path1;path2;....;pathN”

Overwrite output vrt [boolean]

Overwrite VRT if it’s already exist

Default: False

Outputs¶

Output vrt filename [file]

VRT output filename

Output vrt string [string]

VRT content returned as string

Console usage¶

processing.runalg('qgis:mergedatasourcesinvrt', input_datasources, input_overwrite_flag, output_vrt_file)

See also¶

Description¶

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Parameters¶

Input layer [vector: any]

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Calculate extent for each feature separately [boolean]

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Default: False

Outputs¶

Output layer [vector]

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Console usage¶

processing.runalg('qgis:polygonfromlayerextent', input_layer, by_feature, output)

See also¶

Description¶

Reprojects a vector layer in a different CRS.

Parameters¶

Input layer [vector: any]

Layer to reproject.

Target CRS [crs]

Destination coordinate reference system.

Default: EPSG:4326

Outputs¶

Reprojected layer [vector]

The resulting layer.

Console usage¶

processing.runalg('qgis:reprojectlayer', input, target_crs, output)

See also¶

Description¶

Saves the selected features as a new layer.

Parameters¶

Input layer [vector: any]

Layer to process.

Outputs¶

Output layer with selected features [vector]

The resulting layer.

Console usage¶

processing.runalg('qgis:saveselectedfeatures', input_layer, output_layer)

See also¶

Description¶

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Parameters¶

Vector layer [vector: any]

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Style file [file]

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Outputs¶

Styled layer [vector]

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Console usage¶

processing.runalg('qgis:setstyleforvectorlayer', input, style)

See also¶

Description¶

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Parameters¶

Input Layer [vector: any]

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Horizontal spacing [number]

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Default: 0.1

Vertical spacing [number]

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Default: 0.1

Outputs¶

Output [vector]

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Console usage¶

processing.runalg('qgis:snappointstogrid', input, hspacing, vspacing, output)

See also¶

Description¶

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Parameters¶

Input layer [vector: any]

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Unique ID field [tablefield: any]

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Outputs¶

Output directory [directory]

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Console usage¶

processing.runalg('qgis:splitvectorlayer', input, field, output)

See also¶

Description¶

Return an oriented minimum bounding Box layer by using the rotating calipers algorithm.

Parameters¶

Input layer [vector: any]

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Calculate OMBB for each feature separately [boolean]

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Default: True

Outputs¶

Oriented_MBBox [vector]

The resulting layer.

Console usage¶

processing.runalg("qgis:orientedminimumboundingbox", input , by_feature, output)

See also¶