Error Ellipse on Quiver plot

Hi there!
My topic is very similar to this topic @Eric_Firing1. However it seems to be ready only posts, I cannot reply to it.

I am asking here if there is new development in working on this topic?

I detailed what I want to do in this issue:

In a nutshell, I would like to know if it is possible to get the coordinates associated with the top and bottom of the arrow in a ‘uv’ plotting mode. Any suggestions?