Multiple instances of the GRAVITY_FT INSNAME

[jean-philippeberger]

Description

While testing OifitsExplorer version 0.3.0 beta 10 on a collection of 20 oifits GRAVITY files of the same target I notice the following weakness. The TARGET windows shows multiple folders with names "GRAVITY_FT_#" with # going from 1 to 9 (despite the INSNAME in each table being always GRAVITY_FT, (ee screenshot below). Since the interface does not allow a practical multiple selection of folders this makes it impossible to read all the content of the GRAVITY_FT data at once simply.

screenshot: https://cloud.univ-grenoble-alpes.fr/s/wgbRGM34rws7ptH

Additionally, while looking at the FOLDER tooltips it seems that almost all folders correspond to the same number of channels, Lambda min, max and resolution. So this grouping by folders is not obvious to understand.

Desirable evolution

I currently don't see any real justification for separating the different folders like so. I would think that all GRAVITY_FT data should appear under the same folder name GRAVITY_FT.