What is meant by logical cordinates and physical cordinates in GraphicsViewFramework?

[keshav2010]

I've been reading about Qt's Graphics View Framework and often books use terms like "Logical coordinates" and "Physical Coordinates" , can anyone here please tell me exactly what is the difference between these two , just couldn't find anything relevant on this nor on Qt's official forum :crying:

[high_flyer]

Its all explained in details in the documentation:
http://doc.qt.io/qt-5/coordsys.html in the "Window-Viewport Conversion" section.

If after reading this you still have specific questions, ask them here.
I don't think anyone here can explain it better than it appears in this documentation.

[keshav2010]

Thank you for referring to that documentation section, I now have an idea of exactly what it meant by logical and physical coordinates, basically from what i understood, logical coordinates is what we are specifying and they are being mapped onto the paintDevice coordinates or physical coordinates which might differ due to various possible transformation on paintDevice such as scaling, restricted Width and Height.