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144 lines
7.4 KiB
Plaintext
144 lines
7.4 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/analysis/vector/qgsgeometryanalyzer.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsGeometryAnalyzer
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{
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%Docstring
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The QGis class provides vector geometry analysis functions
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%End
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%TypeHeaderCode
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#include "qgsgeometryanalyzer.h"
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%End
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public:
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bool simplify( QgsVectorLayer *layer, const QString &shapefileName, double tolerance,
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bool onlySelectedFeatures = false, QProgressDialog *p = 0 );
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%Docstring
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Simplify vector layer using (a modified) Douglas-Peucker algorithm
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and write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param tolerance (level of simplification)
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool centroids( QgsVectorLayer *layer, const QString &shapefileName,
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bool onlySelectedFeatures = false, QProgressDialog *p = 0 );
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%Docstring
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Calculate the true centroids, or 'center of mass' for a vector layer and
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write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool extent( QgsVectorLayer *layer, const QString &shapefileName, bool onlySelectedFeatures = false, QProgressDialog *p = 0 );
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%Docstring
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Create a polygon based on the extent of all (selected) features and write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool buffer( QgsVectorLayer *layer, const QString &shapefileName, double bufferDistance,
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bool onlySelectedFeatures = false, bool dissolve = false, int bufferDistanceField = -1, QProgressDialog *p = 0 );
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%Docstring
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Create buffers for a vector layer and write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param bufferDistance distance for buffering (if no buffer field is specified)
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param dissolve if true, merge all the buffers to a big multipolygon
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\param bufferDistanceField index of the attribute field that contains the buffer distance (or -1 if all features have the same buffer distance)
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool convexHull( QgsVectorLayer *layer, const QString &shapefileName, bool onlySelectedFeatures = false,
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int uniqueIdField = -1, QProgressDialog *p = 0 );
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%Docstring
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Create convex hull(s) of a vector layer and write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param uniqueIdField index of the attribute field that contains the unique convex hull id (or -1 if
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all features have the same buffer distance)
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool dissolve( QgsVectorLayer *layer, const QString &shapefileName, bool onlySelectedFeatures = false,
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int uniqueIdField = -1, QProgressDialog *p = 0 );
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%Docstring
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Dissolve a vector layer and write it to a new shape file
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\param layer input vector layer
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\param shapefileName path to the output shp
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\param onlySelectedFeatures if true, only selected features are considered, else all the features
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\param uniqueIdField index of the attribute field that contains the unique id to dissolve on (or -1 if
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all features should be dissolved together)
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\param p progress dialog (or 0 if no progress dialog is to be shown)
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:rtype: bool
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%End
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bool eventLayer( QgsVectorLayer *lineLayer, QgsVectorLayer *eventLayer, int lineField, int eventField, QgsFeatureIds &unlocatedFeatureIds /Out/, const QString &outputLayer,
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const QString &outputFormat, int locationField1, int locationField2 = -1, int offsetField = -1, double offsetScale = 1.0,
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bool forceSingleGeometry = false, QgsVectorDataProvider *memoryProvider = 0, QProgressDialog *p = 0 );
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%Docstring
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Creates an event layer (multipoint or multiline) by locating features from a (non-spatial) event table along the features of a line layer.
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Note that currently (until QgsGeometry supports m-values) the z-coordinate of the line layer is used for linear referencing
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\param lineLayer layer with the line geometry
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\param eventLayer layer with features and location field
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\param lineField join index in line layer
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\param eventField join index in event layer
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\param outputLayer name of output file (can be empty if a memory layer is used)
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\param outputFormat name of output format (can be empty if a memory provider is used to store the results)
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\param unlocatedFeatureIds out: ids of event features where linear referencing was not successful
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\param locationField1 attribute index of location field in event layer
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\param locationField2 attribute index of location end field (or -1 for point layer)
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\param offsetField attribute index for offset field. Negative offset value = offset to left side, positive value = offset to right side
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\param offsetScale factor to scale offset
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\param forceSingleGeometry force layer to single point/line type. Feature attributes are copied in case of multiple matches
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\param memoryProvider memory provider to write output to (can be 0 if output is written to a file)
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\param p progress dialog or 0 if no progress dialog should be shown
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:rtype: bool
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%End
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QgsGeometry locateBetweenMeasures( double fromMeasure, double toMeasure, const QgsGeometry &lineGeom );
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%Docstring
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Returns linear reference geometry as a multiline (or 0 if no match). Currently, the z-coordinates are considered to be the measures (no support for m-values in QGIS)
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:rtype: QgsGeometry
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%End
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QgsGeometry locateAlongMeasure( double measure, const QgsGeometry &lineGeom );
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%Docstring
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Returns linear reference geometry. Unlike the PostGIS function, this method always returns multipoint or 0 if no match (not geometry collection).
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Currently, the z-coordinates are considered to be the measures (no support for m-values in QGIS)
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:rtype: QgsGeometry
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/analysis/vector/qgsgeometryanalyzer.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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