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Vector geometry

Concave hull

Kuvaus

<put algorithm description here>

Parameters

Input point layer [vector: point]
<put parameter description here>
Threshold (0-1, where 1 is equivalent with Convex Hull) [number]

<put parameter description here>

Default: 0.3

Allow holes [boolean]

<put parameter description here>

Default: True

Split multipart geometry into singleparts geometries [boolean]

<put parameter description here>

Default: False

Tulokset

Concave hull [vector]
<put output description here>

Console usage

processing.runalg('qgis:concavehull', input, alpha, holes, no_multigeometry, output)

See also

Convert geometry type

Kuvaus

Converts a geometry type to another one.

Parameters

Input layer [vector: any]
Layer in input.
New geometry type [selection]

Type of conversion to perform.

Options:

  • 0 — Centroids
  • 1 — Nodes
  • 2 — Linestrings
  • 3 — Multilinestrings
  • 4 — Polygons

Default: 0

Tulokset

Output [vector]
The resulting layer.

Console usage

processing.runalg('qgis:convertgeometrytype', input, type, output)

See also

Convex hull

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: any]
<put parameter description here>
Field (optional, only used if creating convex hulls by classes) [tablefield: any]

Optional.

<put parameter description here>

Method [selection]

<put parameter description here>

Options:

  • 0 — Create single minimum convex hull
  • 1 — Create convex hulls based on field

Default: 0

Tulokset

Convex hull [vector]
<put output description here>

Console usage

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

See also

Create points along lines

Kuvaus

<put algorithm description here>

Parameters

lines [vector: any]
<put parameter description here>
distance [number]

<put parameter description here>

Default: 1

startpoint [number]

<put parameter description here>

Default: 0

endpoint [number]

<put parameter description here>

Default: 0

Tulokset

output [vector]
<put output description here>

Console usage

processing.runalg('qgis:createpointsalonglines', lines, distance, startpoint, endpoint, output)

See also

Delaunay-kolmiointi

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: point]
<put parameter description here>

Tulokset

Delaunay triangulation [vector]
<put output description here>

Console usage

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

See also

Densify geometries given an interval

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon, line]
<put parameter description here>
Interval between Vertices to add [number]

<put parameter description here>

Default: 1.0

Tulokset

Densified layer [vector]
<put output description here>

Console usage

processing.runalg('qgis:densifygeometriesgivenaninterval', input, interval, output)

See also

Densify geometries

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon, line]
<put parameter description here>
Vertices to add [number]

<put parameter description here>

Default: 1

Tulokset

Densified layer [vector]
<put output description here>

Console usage

processing.runalg('qgis:densifygeometries', input, vertices, output)

See also

Dissolve

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon, line]
<put parameter description here>
Dissolve all (do not use field) [boolean]

<put parameter description here>

Default: True

Unique ID field [tablefield: any]

Optional.

<put parameter description here>

Tulokset

Dissolved [vector]
<put output description here>

Console usage

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

See also

Eliminate sliver polygons

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon]
<put parameter description here>
Use current selection in input layer (works only if called from toolbox) [boolean]

<put parameter description here>

Default: False

Selection attribute [tablefield: any]
<put parameter description here>
Comparison [selection]

<put parameter description here>

Options:

  • 0 — ==
  • 1 — !=
  • 2 — >
  • 3 — >=
  • 4 — <
  • 5 — <=
  • 6 — begins with
  • 7 — contains

Default: 0

Value [string]

<put parameter description here>

Default: 0

Merge selection with the neighbouring polygon with the [selection]

<put parameter description here>

Options:

  • 0 — Largest area
  • 1 — Smallest Area
  • 2 — Largest common boundary

Default: 0

Tulokset

Cleaned layer [vector]
<put output description here>

Console usage

processing.runalg('qgis:eliminatesliverpolygons', input, keepselection, attribute, comparison, comparisonvalue, mode, output)

See also

Explode lines

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: line]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Extract nodes

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon, line]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Fill holes

Kuvaus

<put algorithm description here>

Parameters

Polygons [vector: any]
<put parameter description here>
Max area [number]

<put parameter description here>

Default: 100000

Tulokset

Results [vector]
<put output description here>

Console usage

processing.runalg('qgis:fillholes', polygons, max_area, results)

See also

Kiinteän etäisyyden vyöhyke

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: any]
<put parameter description here>
Distance [number]

<put parameter description here>

Default: 10.0

Segments [number]

<put parameter description here>

Default: 5

Dissolve result [boolean]

<put parameter description here>

Default: False

Tulokset

Buffer [vector]
<put output description here>

Console usage

processing.runalg('qgis:fixeddistancebuffer', input, distance, segments, dissolve, output)

See also

Keep n biggest parts

Kuvaus

<put algorithm description here>

Parameters

Polygons [vector: polygon]
<put parameter description here>
To keep [number]

<put parameter description here>

Default: 1

Tulokset

Results [vector]
<put output description here>

Console usage

processing.runalg('qgis:keepnbiggestparts', polygons, to_keep, results)

See also

Viivat polygoneiksi

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: line]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Multipart to singleparts

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: any]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Points displacement

Kuvaus

Moves overlapped points at small distance, that they all become visible. The result is very similar to the output of the “Point displacement” renderer but it is permanent.

Parameters

Input layer [vector: point]
Layer with overlapped points.
Displacement distance [number]

Desired displacement distance NOTE: displacement distance should be in same units as layer.

Default: 0.00015

Horizontal distribution for two point case [boolean]

Controls distribution direction in case of two overlapped points. If True points will be distributed horizontally, otherwise they will be distributed vertically.

Default: True

Tulokset

Output layer [vector]
The resulting layer with shifted overlapped points.

Console usage

processing.runalg('qgis:pointsdisplacement', input_layer, distance, horizontal, output_layer)

See also

Polygonin keskiöt

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Polygonize

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: line]
<put parameter description here>
Keep table structure of line layer [boolean]

<put parameter description here>

Default: False

Create geometry columns [boolean]

<put parameter description here>

Default: True

Tulokset

Output layer [vector]
<put output description here>

Console usage

processing.runalg('qgis:polygonize', input, fields, geometry, output)

See also

Polygonit viivoiksi

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Simplify geometries

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: polygon, line]
<put parameter description here>
Tolerance [number]

<put parameter description here>

Default: 1.0

Tulokset

Simplified layer [vector]
<put output description here>

Console usage

processing.runalg('qgis:simplifygeometries', input, tolerance, output)

See also

Singleparts to multipart

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: any]
<put parameter description here>
Unique ID field [tablefield: any]
<put parameter description here>

Tulokset

Output layer [vector]
<put output description here>

Console usage

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

See also

Vaihtelevan etäisyyden vyöhyle

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: any]
<put parameter description here>
Distance field [tablefield: any]
<put parameter description here>
Segments [number]

<put parameter description here>

Default: 5

Dissolve result [boolean]

<put parameter description here>

Default: False

Tulokset

Buffer [vector]
<put output description here>

Console usage

processing.runalg('qgis:variabledistancebuffer', input, field, segments, dissolve, output)

See also

Voronoi-monikulmiot

Kuvaus

<put algorithm description here>

Parameters

Input layer [vector: point]
<put parameter description here>
Buffer region [number]

<put parameter description here>

Default: 0.0

Tulokset

Voronoi polygons [vector]
<put output description here>

Console usage

processing.runalg('qgis:voronoipolygons', input, buffer, output)

See also