@gdementen

The flag transpose in to_csv is nice but creates an extra axis with a default name (an integer).
Btw, users may want to change that meaningless default name.
So when you try to read the CSV file after, you get an LArray object with shape like
'axis1 (10) x axis2 (16) x axis3 (8) x default (1)' and then you need to reshape the array to get rid of this last axis.

Do you think it worth to do something about it?