Hello, everyone!
i use qGraphicsView Frame to draw graph. And I draw my graph on a class which inherit from QGraphicsItem. but when i use massive volume of data,(such as more than 100,000 points),then the speed of the drawing graph is so slowly without anyone's tolerance.
How can i enhance the speed of drawing points ? if i draw graph on the item class which inherit from QGraphicsPixmapItem, does this will help me to speed up drawing points?
or any other useful advice ?
wish your reply !
Thank you very much!