How many variables in workspace
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Marco Castelli
on 28 Dec 2012
Commented: Tobias Kern
on 9 Apr 2021
Hi, I need a function how return the number of variables in the Workspace. Does Someone knows if this function exists?
thanks Marco
3 Comments
Image Analyst
on 28 Dec 2012
I couldn't think of any reason either. I figured it must be something like fdep, though somewhat different - for variables instead of functions and classes.
Walter Roberson
on 28 Dec 2012
Edited: Walter Roberson
on 28 Dec 2012
From the title I thought perhaps the question was going to be what the maximum number of variables in a workspace is. The answer to that appears to be 65533.
Accepted Answer
Image Analyst
on 28 Dec 2012
Edited: Image Analyst
on 28 Dec 2012
variablesInCurrentWorkspace = who
numVariables = length(variablesInCurrentWorkspace)
More Answers (1)
JP Hadden
on 15 Mar 2017
For the responders, I have a situation where this is useful... we have an RSA which spits out matlab files where there can be a different number of data variables depending on the measurement. It 's useful to know how many there are to be able to analyse them.
1 Comment
Walter Roberson
on 15 Mar 2017
Edited: Walter Roberson
on 15 Mar 2017
What is an "RSA" in this context?
Does it output MATLAB code? If so then could it be modified to output the variables as structure members instead of independent variables?
If it outputs .mat files then those can be load()'d with an output argument, producing a structure.
With a structure, you can ask about the length of the fieldnames.
If you are working with dynamically generated full variable names, you probably want to avoid that.
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