• What's wrong?

Rank widget does not show that Manual selection is active, if:

1. Best ranked was active.
2. I clicked into the white part of the table to deselect.

The "Select Attributes" radio button still has "Best ranked" active, but nothing is selected (and the status bar shows that nothing gets to the output). Instead, the "Select Attributes" radio button should switch to "

Description of the desired feature

The function uses np.min and np.max to get the bounding region of the given set of coordinates. This doesn't work if the coordinates are coming from xarray because the min