I have a vectorlayer that contains a lot of feature, I know that each feature has an unique Id
Each of them has some propertie like coordinateX, coordinateY, color, name
With a QTimer, each 2 sec I want to change the position of one of them by change the coordinate using the QgsGeometry::fromPoint(x,y), i. e. the feature which has the Id=4 and update the Mapcanvas with the updated feature.
How Can i get the feature of a given Id ? And How can i proceed to update the mapcanvas with the change in the feature attributes ?
أكثر...
Each of them has some propertie like coordinateX, coordinateY, color, name
With a QTimer, each 2 sec I want to change the position of one of them by change the coordinate using the QgsGeometry::fromPoint(x,y), i. e. the feature which has the Id=4 and update the Mapcanvas with the updated feature.
How Can i get the feature of a given Id ? And How can i proceed to update the mapcanvas with the change in the feature attributes ?
أكثر...