deal with netcdf file not well described

[lj-mu]

Really nice software!

I just wonder if psy-view could support some wired netcdf files, for example:

netcdf omega3 {
dimensions:
i = 9011 ;
j = 8939 ;
k = 6 ;
variables:
float momVort3(k, j, i) ;
momVort3:long_name = "3rd component (vertical) of Vorticity" ;
momVort3:units = "s^-1" ;
momVort3:grid_loc = "3220" ;

// global attributes:
:CDI = "Climate Data Interface version 2.4.4 (https://mpimet.mpg.de/cdi)" ;
:Conventions = "none" ;

where, the coordinate is not provided in details.

When I open this nc file using psy-view, I got below error:

Traceback (most recent call last):
File "/Users/miniconda3/bin/psy-view", line 11, in
sys.exit(main())
^^^^^^
File "/Users/miniconda3/lib/python3.11/site-packages/psy_view/init.py", line 161, in main
start_app(ds, args.name, args.plotmethod, args.preset)
File "/Users/miniconda3/lib/python3.11/site-packages/psy_view/init.py", line 73, in start_app
ds_widget = DatasetWidgetStandAlone(ds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/miniconda3/lib/python3.11/site-packages/psy_view/ds_widget.py", line 340, in init
self.refresh()
File "/Users/miniconda3/lib/python3.11/site-packages/psy_view/ds_widget.py", line 1588, in refresh
valid_variables = self.plotmethod_widget.valid_variables(self.ds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/miniconda3/lib/python3.11/site-packages/psy_view/plotmethods.py", line 825, in valid_variables
xc_dims = set(ds[self.combo_xcoord.currentText()].dims)
~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/miniconda3/lib/python3.11/site-packages/xarray/core/dataset.py", line 1547, in getitem
raise KeyError(
KeyError: "No variable named ''. Variables on the dataset include ['momVort3']"

It seems that psy-view is not able to deal with such exception. Could you add such feature? as for high-resolution model results, not always coordinates info are provided. Thanks!