sharpetronics/QGIS
1
0
Fork 0
mirror of https://github.com/qgis/QGIS.git synced 2025-10-04 00:04:03 -04:00
Code Issues Packages Projects Releases Wiki Activity

algorithm respects ellipsoid

Browse Source 
fixes to tags and help
This commit is contained in:
Alexander Bruy 2025-07-21 10:14:16 +01:00 committed by Nyall Dawson
parent 6f89d276ff
commit 0082ee536c
2 changed files with 14 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/analysis/processing/qgsalgorithmhubdistance.cpp
View File

@ -33,7 +33,7 @@ QString QgsHubDistanceAlgorithm::displayName() const
QStringList QgsHubDistanceAlgorithm::tags() const
{
return QObject::tr( "lines,points,hub,spoke,geodesic,great,circle,distance" ).split( ',' );
return QObject::tr( "lines,points,hub,spoke,distance" ).split( ',' );
}
QString QgsHubDistanceAlgorithm::group() const
@ -48,14 +48,13 @@ QString QgsHubDistanceAlgorithm::groupId() const
QString QgsHubDistanceAlgorithm::shortHelpString() const
{
return QObject::tr( "Computes the distance between features from the source layer to the closest feature "
return QObject::tr( "This algorithm computes the distance between features from the source layer to the closest feature "
"from the destination layer.\n\n"
"If input layers are not point layers, a point on the surface of the geometries will "
"be taken as the connecting location.\n\n"
"Optionally, geodesic lines can be created, which represent the shortest path on the "
"surface of an ellipsoid. When geodesic mode is used, it is possible to split the "
"created lines at the antimeridian (±180 degrees longitude), which can improve rendering "
"of the lines" );
"Distance calculations are based on the features center.\n\n"
"The resulting line layer contains lines linking each origin point with its nearest destination feature.\n\n"
"The resulting point layer contains origin features center point with an additional field indicating the identifier "
"of the nearest destination feature and the distance to it."
);
}
QString QgsHubDistanceAlgorithm::shortDescription() const
@ -63,6 +62,10 @@ QString QgsHubDistanceAlgorithm::shortDescription() const
return QObject::tr( "Computes the distance between features from the source layer to the closest feature from the destination layer." );
}
Qgis::ProcessingAlgorithmDocumentationFlags QgsHubDistanceAlgorithm::documentationFlags() const
{
return Qgis::ProcessingAlgorithmDocumentationFlag::RespectsEllipsoid;
}
QgsHubDistanceAlgorithm *QgsHubDistanceAlgorithm::createInstance() const
{
@ -121,8 +124,8 @@ QVariantMap QgsHubDistanceAlgorithm::processAlgorithm( const QVariantMap &parame
}
QgsFields fields = spokeSource->fields();
fields.append( QgsField( QStringLiteral( "hub_name" ), QMetaType::Type::QString ) );
fields.append( QgsField( QStringLiteral( "hub_distance" ), QMetaType::Type::Double ) );
fields.append( QgsField( QStringLiteral( "HubName" ), QMetaType::Type::QString ) );
fields.append( QgsField( QStringLiteral( "HubDist" ), QMetaType::Type::Double ) );
QString linesDest;
std::unique_ptr<QgsFeatureSink> linesSink( parameterAsSink( parameters, QStringLiteral( "OUTPUT_LINES" ), context, linesDest, fields, Qgis::WkbType::LineString, hubSource->sourceCrs(), QgsFeatureSink::RegeneratePrimaryKey ) );

1
src/analysis/processing/qgsalgorithmhubdistance.h
View File

@ -41,6 +41,7 @@ class QgsHubDistanceAlgorithm : public QgsProcessingAlgorithm
QString groupId() const override;
QString shortHelpString() const override;
QString shortDescription() const override;
Qgis::ProcessingAlgorithmDocumentationFlags documentationFlags() const override;
QgsHubDistanceAlgorithm *createInstance() const override SIP_FACTORY;
protected: