QgsGml class
This class reads data from a WFS server or alternatively from a GML file.
Contents
- Reference
It uses the expat XML parser and an event based model to keep performance high. The parsing starts when the first data arrives, it does not wait until the request is finished
Public functions
- auto crs() const -> QgsCoordinateReferenceSystem
- Returns features spatial reference system.
- auto featuresMap() const -> QMap<QgsFeatureId, QgsFeature*>
- Gets parsed features for given type name.
-
auto getFeatures(const QString& uri,
QgsWkbTypes::
Type* wkbType, QgsRectangle* extent = nullptr, const QString& userName = QString(), const QString& password = QString(), const QString& authcfg = QString()) -> int - Does the Http GET request to the wfs server Supports only UTF-8, UTF-16, ISO-8859-1, ISO-8859-1 XML encodings.
-
auto getFeatures(const QByteArray& data,
QgsWkbTypes::
Type* wkbType, QgsRectangle* extent = nullptr) -> int - Read from GML data.
- auto idsMap() const -> QMap<QgsFeatureId, QString>
- Gets feature ids map.
Signals
- void dataProgressAndSteps(int progress, int totalSteps)
- Also emit signal with progress and totalSteps together (this is better for the status message)
Function documentation
QgsCoordinateReferenceSystem QgsGml::
Returns features spatial reference system.
int QgsGml::
Does the Http GET request to the wfs server Supports only UTF-8, UTF-16, ISO-8859-1, ISO-8859-1 XML encodings.
| Parameters | |
|---|---|
| uri | GML URL |
| wkbType | wkbType to retrieve |
| extent | retrieved extents |
| userName | username for authentication |
| password | password for authentication |
| authcfg | authentication configuration id |
| Returns | 0 in case of success |
int QgsGml::
Read from GML data.
Constructor uri param is ignored Supports only UTF-8, UTF-16, ISO-8859-1, ISO-8859-1 XML encodings.