How many variables in workspace

Hi, I need a function how return the number of variables in the Workspace. Does Someone knows if this function exists?

thanks Marco

[Jan]

I cannot imagine a situation, where this is useful. Could you be so kind an give me a hint?

[Image Analyst]

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]

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.

Answer 1

[Image Analyst]

variablesInCurrentWorkspace = who
numVariables = length(variablesInCurrentWorkspace)

[Tobias Kern]

length(who)

Answer 2

[JP Hadden]

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.

[Walter Roberson]

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.

http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval