Re: clear all variables except specific ones

[Martin Weiser]

On 14.8.2017 20:53, Mike Miller wrote:
> On Sat, Aug 12, 2017 at 06:30:29 -0700, dariodematties wrote:
> > How can I clear all variables except a specific subset from them?
>
> Probably a couple ways. Here is how you can get a cell array of names of
> variables in your workspace:
>
>     v = whos;
>     names = {v.name};
>
> or the uglier shortcut
>
>     names = {[whos].name};
>
> From there you can iterate over the list of variable names and clear or
> not clear each one.
>
> You could also save the variables you like to a file, clear all, and
> load the file back into your workspace.
>
>
>
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Hi,

Would not be something like:

clear -x the_one_i_need

or

clear -x *[0-9] #clear those that do not end by digit

more elegant?

Of course, the usability of the above stands and fails with the length 
of the list you wish to retain or upon your ability to find the matching 
pattern.

See:
https://www.gnu.org/software/octave/doc/interpreter/Status-of-Variables.html#index-clear

Best,
Martin W.