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24.1.6. Fix Geometry

24.1.6.1. Add missing vertices along borders

Adds the missing vertices along polygons borders, based on an error layer from the Missing vertices along borders algorithm.

../../../../_images/fix_geometry_missing_vertices.png

Abb. 24.16 Fixing missing vertices along polygon borders.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[Vektor: Polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Field of part index

PART_IDX

[tablefield: integer]

Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Border vertices fixed layer

OUTPUT

[Vektor: Polygon]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing border vertices

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing border vertices

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx

  • gc_ringidx

  • gc_vertidx

  • gc_errorx: the x coordinate of the missing vertex.

  • gc_errory: the y coordinate of the missing vertex.

  • gc_error

  • report: a text field describing the fix applied.

  • error_fixed: a boolean field indicating whether the error was fixed.

  • UNIQUE_ID field: the unique ID of the input feature that has a missing vertex.

Border vertices fixed layer

OUTPUT

[Vektor: Polygon]

Output layer with the geometry fix applied to the input features. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometrymissingvertex

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.2. Convert to strictly multipart

Converts multipart geometries that consists of only one geometry into singlepart geometries, based on an error layer from the Strictly multipart algorithm. Layer geometry type will not be changed and will remain multipart.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[vector: line, polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Strictly-multipart layer

OUTPUT

[vector: same as input]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing multipart

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the centroids of the fixed geometries. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing multipart

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx

  • gc_ringidx

  • gc_vertidx

  • gc_errorx: the x coordinate of the centroid of the multipart geometry that has only one part.

  • gc_errory: the y coordinate of the centroid of the multipart geometry that has only one part.

  • gc_error

  • report: a text field describing the fix applied.

  • error_fixed: a boolean field indicating whether the error was fixed.

  • UNIQUE_ID field: the unique ID of the input feature that is multipart but has only one part.

Strictly-multipart layer

OUTPUT

[vector: same as input]

Output layer with the geometry fix applied to the input features. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometrymultipart

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.3. Delete duplicated vertices

Deletes duplicated vertices from the input geometries, based on errors reported by the Duplicated vertices algorithm.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[vector: line, polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Field of part index

PART_IDX

[tablefield: integer]

Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Fixed duplicate vertices layer

OUTPUT

[vector: same as input]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing duplicate vertices

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing duplicate vertices

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx: the index of the feature’s geometry part containing the duplicate vertex.

  • gc_ringidx: the index of the feature’s geometry ring containing the duplicate vertex.

  • gc_vertidx: the index of the duplicate vertex in the feature’s geometry ring.

  • gc_errorx: the x coordinate of the duplicate vertex.

  • gc_errory: the y coordinate of the duplicate vertex.

  • gc_error

  • report: a text field describing the fix applied.

  • error_fixed: a boolean field indicating whether the error was fixed.

  • UNIQUE_ID field: the unique ID of the input feature that has duplicate vertices.

Fixed duplicate vertices layer

OUTPUT

[vector: same as input]

Output layer with the geometry fix applied to the input features. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryduplicatenodes

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.4. Delete features

Deletes error features based on an error layer from some check geometry algorithms, such as:

../../../../_images/fix_geometry_deletefeatures.png

Abb. 24.17 Fixing errors from the „Features inside polygon“ algorithm check.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[Vektor: Geometrie]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Cleaned layer

OUTPUT

[vector: same as input]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from deleting features

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from deleting features

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx

  • gc_ringidx

  • gc_vertidx

  • gc_errorx: the x coordinate of the centroid of the erroneous geometry.

  • gc_errory: the y coordinate of the centroid of the erroneous geometry.

  • gc_error: the index of the feature where the error belongs.

  • report: a text field describing the fix applied.

  • error_fixed: a boolean field indicating whether the error was fixed.

  • UNIQUE_ID field: the unique ID of the input feature with the error.

Cleaned layer

OUTPUT

[vector: same as input]

Output layer with features removed based on detected errors. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometrydeletefeatures

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.5. Delete overlaps

Deletes overlapping areas based on an error layer from the Overlaps algorithm.

../../../../_images/fix_geometry_deleteoverlaps.png

Abb. 24.18 Deleting overlapping areas.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[Vektor: Polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Field of overlap feature unique identifier

OVERLAP_FEATURE_UNIQUE_IDX

[tablefield: any]

Field storing unique values for the overlapping feature identification in input layer, as set in the check algorithm.

Field of error value

ERROR_VALUE_ID

[tablefield: any]

Field storing the error value for each feature, as set in the check algorithm.

No-overlap layer

OUTPUT

[Vektor: Polygon]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing overlaps

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing overlaps

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_errorx: the x coordinate of the centroid of the overlapping area.

  • gc_errory: the y coordinate of the centroid of the overlapping area.

  • gc_error: the area of the overlapping geometry.

  • UNIQUE_ID field: the unique ID of the unique ID of an overlapped input feature.

  • gc_overlap_feature_{unique_id}: the UNIQUE_ID field value for the other overlapping feature.

  • report: a text field describing the fix applied or justifying the failure. Possible values are:

    • Remove overlapping area from neighboring polygon with shortest shared edge

    • Error is obsolete

  • error_fixed: a boolean field indicating whether the error was fixed.

No-overlap layer

OUTPUT

[Vektor: Polygon]

Output layer with input features edited. Overlapping areas reported as errors are removed. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryoverlap

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.6. Delete small angles

Deletes vertices based on an error layer from the Small angles algorithm. When deletion of a vertex results in a duplicate vertex (when a spike vertex is deleted), the duplicate vertex is deleted to keep a single vertex and preserve topology.

Achtung

This algorithm removes the vertex at the reported small angles, generating new segments that may form a new small angle.

../../../../_images/fix_geometry_angle.png

Abb. 24.19 Fixing reported errors on a line feature for angles lower than 15°.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[vector: line, polygon]

Layer with the geometries to fix, same as input in the check algorithm

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm

Field of part index

PART_IDX

[tablefield: integer]

Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Small angle fixed layer

OUTPUT

[vector: same as input]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing small angles

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing small angles

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx: the index of the feature’s geometry part containing the small angle.

  • gc_ringidx: the index of the feature’s geometry ring containing the small angle.

  • gc_vertidx: the index of the vertex with the small angle in the feature’s geometry ring.

  • gc_errorx: the x coordinate of the vertex with the small angle.

  • gc_errory: the y coordinate of the vertex with the small angle.

  • gc_error: the error angle value.

  • UNIQUE_ID field: the unique ID of the input feature with the small angle.

  • report: a text field describing the fix applied or justifying the failure.

  • error_fixed: a boolean field indicating whether the error was fixed.

Small angle fixed layer

OUTPUT

[wie Eingabe]

Output layer with the geometry fix applied to the input features The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryangle

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.7. Fill gaps

Fills the gaps based on a gap and neighbors layer from the Small gaps algorithm. Three different fixing methods are available.

../../../../_images/fix_geometry_gap.png

Abb. 24.20 Fixing gap between polygon features using the Add to largest neighbouring area method.

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[Vektor: Polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Neighbors layer

NEIGHBORS

[vector: table]

Relational table with the unique ID of the gap and its neighbors in input layer, generated by the check algorithm.

Gaps layer

GAPS

[Vektor: Polygon]

Polygon layer with the gaps geometries, generated by the check algorithm.

Methode

METHOD

[Aufzählung]

Standard: 0

Method to apply to the gap fixing. Possible values are:

  • 0 — Add to longest shared edge: adds the gap to the neighboring feature with the longest shared edge.

  • 1 — Create new feature: creates a new feature for each gap.

  • 2 — Add to largest neighbouring area: adds the gap to the neighboring feature with the largest area.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Default: gc_errorid

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Field of error id

ERROR_ID_IDX

[tablefield: any]

Field storing the error ID for each gap, as output by the check algorithm.

Gaps-filled layer

OUTPUT

[Vektor: Polygon]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing gaps

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing gaps

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx

  • gc_ringidx

  • gc_vertidx

  • gc_errorx: the x coordinate of the centroid of the gap.

  • gc_errory: the y coordinate of the centroid of the gap.

  • gc_error: the area of the gap.

  • gc_errorid: the ID of the gap.

  • report: a text field mentioning the method used to fix the gap.

  • error_fixed: a boolean field indicating whether the error was fixed.

Gaps-filled layer

OUTPUT

[Vektor: Polygon]

Output layer of polygons without gaps. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometrygap

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.8. Fill holes

Deletes holes in polygon geometries based on an error layer from the Holes algorithm.

../../../../_images/fix_geometry_holes.png

Abb. 24.21 Deleting holes in a polygon feature.

Siehe auch

Delete holes

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[vector: line, polygon]

Layer with the geometries to fix, same as input in the check algorithm

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm

Field of part index

PART_IDX

[tablefield: integer] Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Holes-filled layer

OUTPUT

[Vektor: Polygon]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing holes

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing holes

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx: the index of the feature’s geometry part containing the hole.

  • gc_ringidx: the index of the feature’s geometry ring containing the hole.

  • gc_vertidx

  • gc_errorx: the x coordinate of the centroid of the hole.

  • gc_errory: the y coordinate of the centroid of the hole.

  • gc_error

  • UNIQUE_ID field: the unique ID of the input feature that has a hole.

  • report: a text field describing the fix applied or justifying the failure.

  • error_fixed: a boolean field indicating whether the error was fixed.

Holes-filled layer

OUTPUT

[Vektor: Polygon]

Output layer of polygons without holes. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryhole

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.9. Fix small polygons

Merges neighboring polygons according to the chosen method, based on an error layer from the Small polygons or Sliver polygons algorithm.

../../../../_images/fix_geometry_area.png

Abb. 24.22 Before and after fixing small polygons (method: merge with neighboring polygon with largest area).

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[Vektor: Polygon]

Layer with the geometries to fix, same as input in the check algorithm.

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm.

Methode

METHOD

[Aufzählung]

Standard: 0

Method to apply to the small polygon geometries:

  • 0 — Merge with neighboring polygon with longest shared edge: merges the small polygon geometry with the neighboring polygon that has the longest shared edge.

  • 1 — Merge with neighboring polygon with largest area: merges the small polygon geometry with the neighboring polygon that has the largest area.

  • 2 — Merge with neighboring polygon with identical attribute value, if any, or leave as is: merges the small polygon geometry with a neighboring polygon that has the same attribute value, if such a polygon exists.

Field to consider when merging polygons with the identical attribute method

Optional

MERGE_ATTRIBUTE

[tablefield: any]

Field in the input layer to consider when merging polygons with the identical attribute method.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm.

Field of part index

PART_IDX

[tablefield: integer] Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Small polygons merged layer

OUTPUT

[Vektor: Polygon]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from merging small polygons

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from merging small polygons

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx

  • gc_ringidx

  • gc_vertidx

  • gc_errorx: the x coordinate of the centroid of the small polygon.

  • gc_errory: the y coordinate of the centroid of the small polygon.

  • gc_error: the area of the small polygon.

  • UNIQUE_ID field: the unique ID of the input feature that is a small polygon.

  • report: a text field describing the fix applied or justifying the failure.

  • error_fixed: a boolean field indicating whether the error was fixed.

Small polygons merged layer

OUTPUT

[Vektor: Polygon]

Output layer of polygons with small polygons merged according to the chosen method. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryarea

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.

24.1.6.10. Split self-intersecting geometries

Splits self-intersecting geometries based on an error layer from the Self-intersections algorithm.

Bemerkung

This algorithm detects invalid polygon geometries (self-intersections). To ensure these invalid features are not filtered out before processing, open optionsAdvanced options next to the Input layer and set Invalid feature filtering to Do not Filter (Better Performance).

../../../../_images/fix_geometry_splitselfintersectinggeometries.png

Abb. 24.23 Fixing self-intersection using various methods: as multi-part (middle), and multiple single-part geometries (right).

Parameter

Grundlegende Parameter

Bezeichnung

Name

Typ

Beschreibung

Eingabelayer

INPUT

[vector: line, polygon]

Layer with the geometries to fix, same as input in the check algorithm

Error layer

ERRORS

[Vektor: Punkt]

Point layer with the errors location, generated by the check algorithm

Methode

METHOD

[Aufzählung]

Method to apply to the self-intersecting geometries:

  • 0 – Split feature into a multi-part feature: splits the self-intersecting geometry into multiple parts stored in a single multipart feature.

  • 1 – Split feature into multiple single-part features: splits the self-intersecting geometry into multiple parts, each part stored in a separate feature.

Field of original feature unique identifier

UNIQUE_ID

[tablefield: any]

Field storing unique values for feature identification in input layer, as set in the check algorithm

Field of part index

PART_IDX

[tablefield: integer]

Default: gc_partidx

Field storing the erroneous feature’s geometry part number.

Field of ring index

RING_IDX

[tablefield: integer]

Default: gc_ringidx

Field storing the erroneous feature’s geometry ring number.

Field of vertex index

VERTEX_IDX

[tablefield: integer]

Default: gc_vertidx

Field storing the erroneous feature’s geometry vertex number.

Field of segment 1

SEGMENT_1

[tablefield: integer]

Default: gc_segment_1

Field storing the number of the first segment involved in the erroneous intersection.

Field of segment 2

SEGMENT_2

[tablefield: integer]

Default: gc_segment_2

Field storing the number of the second segment involved in the erroneous intersection.

Self-intersections fixed layer

OUTPUT

[vector: same as input]

Standard: [Create temporary layer]

Specification of the output layer containing fixed features. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Report layer from fixing self-intersections

REPORT

[Vektor: Punkt]

Standard: [Create temporary layer]

Specification of the output layer containing the fixes location. One of:

  • Temporäre Ebene erstellen (TEMPORARY_OUTPUT)

  • In Datei speichern…

  • In GeoPackage speichern…

  • In Datenbank speichern…

Die Kodierung der Datei kann ebenfalls hier geändert werden.

Fortgeschrittene Parameter

Bezeichnung

Name

Typ

Beschreibung

Tolerance

TOLERANCE

[numerisch: Ganzzahl]

Default: 8

Numerical precision of geometric operations, given as an integer n, meaning that two vertices less than 10-n apart (in map units) are considered to be merged.

Ausgaben

Bezeichnung

Name

Typ

Beschreibung

Report layer from fixing self-intersections

REPORT

[Vektor: Punkt]

Output point layer representing the error locations and fix applied. The output layer contains the following fields:

  • gc_layerid: the ID of the input layer.

  • gc_layername: the name of the input layer.

  • gc_partidx: the index of the feature’s geometry part where the self-intersection occurs.

  • gc_ringidx: the index of the feature’s geometry ring where the self-intersection occurs.

  • gc_vertidx

  • gc_errorx: the x coordinate of the self-intersection.

  • gc_errory: the y coordinate of the self-intersection.

  • gc_error

  • gc_segment_1: the index of the first segment involved in the intersection.

  • gc_segment_2: the index of the second segment involved in the intersection.

  • UNIQUE_ID field: the unique ID of the self-intersecting input feature.

  • report: a text field describing the fix applied.

  • error_fixed: a boolean field indicating whether the error was fixed.

Self-intersections fixed layer

OUTPUT

[vector: same as input]

Output layer with the geometry fix applied to the input features. The layer contains the same fields as in the input layer.

Python-Code

Algorithm ID: native:fixgeometryselfintersection

import processing
processing.run("algorithm_id", {parameter_dictionary})

Die Algorithmus-Kennung wird angezeigt, wenn Sie den Mauszeiger über den Algorithmus in der Verarbeitungs-Werkzeugkiste bewegen. Die Parameter-Liste (parameter_dictionary) enthält die Namen und Werte der Parameter. Siehe Verarbeitungs-Algorithmen von der Konsole aus verwenden für Details zur Ausführung von Verarbeitungsalgorithmen über die Python-Konsole.