keep

KEEP is complementary to the "clear" command: it keeps the supplied variables and deletes the rest.

Description

KEEP is complementary to the "clear" command: instead of clearing the supplied variables, it keeps them and deletes the rest.

For example, the command " keep x y " clears all variables from the workspace except x and y.

• Acknowledgements: This submission has inspired the following:; KEEP3, keep2, Keep4, keepfield
• MATLAB release: MATLAB 5.2 (R10)

[Suresh Joel]

Cool function - simple and useful

[Matt Remigy]

Thanks !

[Till Bockemuehl]

Nifty function. Exactly what I was searching for.

[Rasmus Anthin]

Superb! I think it is obvious there should be a reciprocal to the clear function like this in matlab's inherent set of functions.

[B. Peña]

thanks

[Fahad Mahmood]

Smart function indeed! Good thing for us that you thought about it!

[Yaser Ahmed]

 

[Ilker Delice]

Thanks a lot excellent work

[joep van berkel]

great !!

[Athanasios Pechlivanis]

You are great!!

Thanks a lot, you have saved much of my time!!

[Camilo Cano]

Just wonderful. Works like a charm. Thanks a lot.

[Hui Shi]

yes, that's exactly what I am looking for.
Thanks!

[Yi Li]

Good job!

[D. Gietelink]

Perfect! why is this not a standard matlab function yet?

[Jerome G.]

Exactement ce que je cherchais.

[Ivan Ordonez]

It is a very good and practical tool.

[Benjamin Fenech]

 

[Kristofer Svensson]

 

[Andrew Lingg]

Very nice for cleaning up memory while holding onto important results

[Daniel Vasques]

I agree this should come with MATLAB.

[Christoph Ullrich]

Super - saves lines and lines of clean codes...

[Taon Khuu]

Excellent little function!!!

[Andre Crawford]

This file saves lots of time and extra coding.

[Andrew Gee]

This is gold

[Mauricio Fernandez]

Muchas gracias por tu trabajo, good job.

[J J]

Why on earth is this function not part of MATLAB to begin with??

[Sulabh Dhanuka]

Though simple in idea, it is such a useful function. I have wished for something like this for so long. I agree, it makes no sense for this to be a part of Matlab.

[M M Dupin]

Dear MATLAB developers, please listen to users and add this *extremely* useful function in the core of MATLAB. Plus, it has already been tested by us!

[Mark Thommy]

A very helpful piece of code, just what I needed. Well done to the author!

[Cornelis P. Bogerd]

Excellent

[Chris Andrews]

I love having this script. Thank you for posting!

[H D]

Does Mathworks need to pay a lot to make this function in the built-in lib?

[Matthew Rydzik]

Perfect code, Thanks!

[Sushil Subramanian]

Excellent tool! MATLAB should include this.

[K R]

Brilliant! This is incredibly useful.

[Touko Pouko]

Bravissimo!

[Kristyn Falkenstern]

Thank you! this is great.

[Thomas Deneux]

looks great, but the code can be much more simple!
for example,

function keep(varargin)

% variables to clear in a cell array
varlist = evalin('caller','who');
varlist = setdiff(varlist,varargin);

% make a string (separate the variable by a space)
[varlist{:,2}] = deal(' ');
varlist = varlist';
varstr = [varlist{:}];

% and clear!
evalin('caller',['clear ' varstr])

[Florian]

 

[shah]

thanks