23QString QgsSetMValueAlgorithm::name()
const
25 return QStringLiteral(
"setmvalue" );
28QString QgsSetMValueAlgorithm::displayName()
const
30 return QObject::tr(
"Set M value" );
33QStringList QgsSetMValueAlgorithm::tags()
const
35 return QObject::tr(
"set,add,m,measure,values" ).split(
',' );
38QString QgsSetMValueAlgorithm::group()
const
40 return QObject::tr(
"Vector geometry" );
43QString QgsSetMValueAlgorithm::groupId()
const
45 return QStringLiteral(
"vectorgeometry" );
48QString QgsSetMValueAlgorithm::shortHelpString()
const
50 return QObject::tr(
"This algorithm sets the M value for geometries in a layer.\n\n"
51 "If M values already exist in the layer, they will be overwritten "
52 "with the new value. If no M values exist, the geometry will be "
53 "upgraded to include M values and the specified value used as "
54 "the initial M value for all geometries." );
57QString QgsSetMValueAlgorithm::outputName()
const
59 return QObject::tr(
"M Added" );
62QgsSetMValueAlgorithm *QgsSetMValueAlgorithm::createInstance()
const
64 return new QgsSetMValueAlgorithm();
67bool QgsSetMValueAlgorithm::supportInPlaceEdit(
const QgsMapLayer *l )
const
69 const QgsVectorLayer *layer = qobject_cast< const QgsVectorLayer * >( l );
86void QgsSetMValueAlgorithm::initParameters(
const QVariantMap & )
89 mValueParam->setIsDynamic(
true );
91 mValueParam->setDynamicLayerParameterName( QStringLiteral(
"INPUT" ) );
92 addParameter( mValueParam.release() );
97 mMValue = parameterAsDouble( parameters, QStringLiteral(
"M_VALUE" ), context );
100 mMValueProperty = parameters.value( QStringLiteral(
"M_VALUE" ) ).value<
QgsProperty >();
114 newGeometry->dropMValue();
117 if ( mDynamicMValue )
120 newGeometry->addMValue( m );
@ SkipGeometryValidityChecks
Invalid geometry checks should always be skipped. This flag can be useful for algorithms which always...
WkbType
The WKB type describes the number of dimensions a geometry has.
QFlags< ProcessingFeatureSourceFlag > ProcessingFeatureSourceFlags
Flags which control how QgsProcessingFeatureSource fetches features.
@ Double
Double/float values.
virtual QgsAbstractGeometry * clone() const =0
Clones the geometry by performing a deep copy.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
bool hasGeometry() const
Returns true if the feature has an associated geometry.
void setGeometry(const QgsGeometry &geometry)
Set the feature's geometry.
A geometry is the spatial representation of a feature.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
Base class for all map layer types.
Contains information about the context in which a processing algorithm is executed.
QgsExpressionContext & expressionContext()
Returns the expression context.
bool supportInPlaceEdit(const QgsMapLayer *layer) const override
Checks whether this algorithm supports in-place editing on the given layer Default implementation for...
Base class for providing feedback from a processing algorithm.
static bool isDynamic(const QVariantMap ¶meters, const QString &name)
Returns true if the parameter with matching name is a dynamic parameter, and must be evaluated once f...
Definition for a property.
@ Double
Double value (including negative values)
A store for object properties.
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE Qgis::WkbType wkbType() const FINAL
Returns the WKBType or WKBUnknown in case of error.
static Qgis::WkbType addM(Qgis::WkbType type)
Adds the m dimension to a WKB type and returns the new type.
static bool hasM(Qgis::WkbType type)
Tests whether a WKB type contains m values.
QList< QgsFeature > QgsFeatureList