storing data from function

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Jonathan
Jonathan on 31 May 2012
Commented: nazrin mokhtar on 28 Feb 2020
Hi,
I have this code in my function file: [sound, freq] = wavread(file) and for some reason sound and freq are not being stored in the workspace. What am I doing wrong?
  1 Comment
Jonathan
Jonathan on 31 May 2012
But when I enter [sound, freq] = wavread(file) into the command line, the variables store in the workspace.

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Accepted Answer

Oleg Komarov
Oleg Komarov on 31 May 2012
If you're using wavread inside a function then you have to return them to your base workspace explicitly because the workspace of a function is kept separate.
Example, will not return sound and freq to the base workspace:
function foo(file)
[sound, freq] = wavread(file)
end
You have to declare the outputs explicitly:
function [sound, freq] = foo(file)
[sound, freq] = wavread(file)
end
and call it as
[out1,out2] = foo(file)
  2 Comments
Jonathan
Jonathan on 31 May 2012
I tried that. sound and freq show up in the command line, but not in the workspace.
Jonathan
Jonathan on 31 May 2012
nevermind, I had a bit of code at the very end that wasn't defined so the function wasn't finishing. Thanks for the help!

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More Answers (1)

Stephen
Stephen on 31 May 2012
So, you have:
function something
[sound, freq] = wavread(file);
end
? If so, you need to output those values like
function [sound, freq] = something
then when you call the function, it will spit out those values. Otherwise, they only exist in the temporary workspace of the function, which gets cleared out when it's done
  3 Comments
Jonathan
Jonathan on 31 May 2012
nevermind, I had a bit of code at the very end that wasn't defined so the function wasn't finishing. Thanks for the help!
nazrin mokhtar
nazrin mokhtar on 28 Feb 2020
i have same problem to save in workspace...can i know how to solve it

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