UV coordinates vs Point coordinates

Hi all,


I am trying to figure out what is the difference between UV and XY. It seems that UV is on a totally different coordinate system? If so, how do you know what that is?


I have an example of where they are showing the same numbers, but they are definitely different things?

Thank you.

UV coordinates are relative to the size of the face. This is as opposed to absolute coordinates e.g XYZ

So u=0.5 V=0.5 is in the middle of the face.

In the below rectangle 100x200 in size

U=0.104, so x is 100x0.104=10.4

V=0.143, so y=200x0.143=28.6

Here is a thorough description of the difference between UV and XY space