Explore view: Goto position

[rmaree]

In the "Position" panel in the Explore view of an image, it would be nice to allow the user to enter a x,y position and click on a "go to" button to jump directly into that (x,y) position (view centered on that central position). I therefore suggest to use an editable field of x,y position (like e.g. the channel form field in the multidimensional panel).