How to Clear all Variables of a Workspace Except for Those Explicitly Excluded?

How do I clear all variables of a workspace except for those that I explicitly mention not to be cleared?

Answer 1

[Jan]

See doc clearvars:

clearvars -except keepVariables

I recommend to use functions. Then there is no need to clear workspace variables. For larger projects it is very useful, if the workspace is kept clean, instead of applying method to clean them manually.

Answer 2

[ES]

http://www.mathworks.com/matlabcentral/fileexchange/181-keep