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How can I save, close, and then reopen a Matlab file later so that I can resume at the same workspace when I closed the file?

Asked by Chanchal Sadhu on 7 May 2015
Latest activity Commented on by Walter Roberson
on 9 May 2015
How can I save, close, and then reopen a Matlab file later so that I can resume at the same workspace when I closed the file?

  3 Comments

What is a "MATLAB file" ?
Do you mean a .MAT file? Or some other data file-format?
To save the workspace information, in the command window you can input: save('filename')
Conversely, to load the workspace information you can pull it back up by using the syntax: load('filename')

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2 Answers

Answer by Walter Roberson
on 8 May 2015
 Accepted Answer

How closely does it need to be reproduced? For example does the previous command output have to be brought back? If you were in the middle of debugging something, does the program state need to be recreated and the restoration leaves you ready to pick up where you left off?
Mathworks does not provide any tools able to save everything about a MATLAB session for later restoration. (It can be especially difficult to save and restore the state of files that are in use.)
Is your purpose to be able to save the state of a calculation so that it can be restarted from its last "checkpoint" ?

  2 Comments

That is right. I was hoping to be able to save the calculations so that I can resume later from its last point.
Mathworks does not provide a general checkpoint facility. The Distributed Computing package does checkpoint its operations automatically, though.
For the case of long computations, see this previous discussion.

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Answer by Michael Haderlein on 7 May 2015

What do you mean with closing the file?
You can save the workspace with mat-files. save('matfile.mat') will save the current workspace in matfile.mat. load('matfile.mat') will load the respective workspace.

  2 Comments

Hi Michael, Thanks a lot for your response. Although the file got saved, the load command did not re-open the "Command" window in the same state as I closed it. The load command only loaded the variables in the "Workspace."
I am looking for ways to reopen my command window as I closed it. Any tips?
Thanks again.
Chanchal
Yes, mat-files save the workspace, not the command window. You might be looking for the diary function. Not sure if it is possible to reset the command window exactly as it was (or how much effort it would take).

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