Clear Empty Variables in Workspace

Eric — Fri, 20 Mar 2009 13:13:01 -0400

This is probably a trivial question but.........I am working on a project that queries a SQL database and if there are no records found for the query, it returns an empty record set & Matlab creates an empty cell array.

Does anyone have a script to loop through the variables in the workspace & clear the ones that meet a certain criteria?

I need to remove variables that meet the criteria below:
1) max value in array is zero
2) all cells are empty

Thanks,
Eric

Re: Clear Empty Variables in Workspace

Ashish Uthama — Mon, 23 Mar 2009 15:48:30 -0400

On Fri, 20 Mar 2009 09:13:01 -0400, Eric
<edette1remove.this1rman@comcast.net> wrote:

> This is probably a trivial question but.........I am working on a
> project that queries a SQL database and if there are no records found
> for the query, it returns an empty record set & Matlab creates an empty
> cell array.

Why not check the return value and clear it if it matches your conditions?

>
> Does anyone have a script to loop through the variables in the workspace
> & clear the ones that meet a certain criteria?
>
> I need to remove variables that meet the criteria below:
> 1) max value in array is zero
> 2) all cells are empty
>
> Thanks,
> Eric

If you _have_ to do this, you might want to look at
WHO - to get a list of your workspace variables
EVAL - to run your conditions on the variable names
CLEAR - ...

EVAL is a 'no-no' in CSSSM, but I cant think of another way.
I would suggest trying something along the lines of my suggestion above.

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Clear Empty Variables in Workspace

Re: Clear Empty Variables in Workspace