Remove instrument objects from MATLAB workspace
This example creates the GPIB object g, copies g to a new variable gcopy, and clears g from the MATLAB workspace. g is then restored to the workspace with instrfind and is shown to be identical to gcopy.
g = gpib('ni',0,1); gcopy = g; clear g g = instrfind; isequal(gcopy,g) ans = 1
If obj is connected to the instrument and it is cleared from the workspace, then obj remains connected to the instrument. You can restore obj to the workspace with the instrfind function. An object connected to the instrument has a Status property value of open.