MATLAB: Workspace not saving – just disappearing!

MATLABnot savingworkspace

Hello Community,

I dont understand what is happening here. I am using a line of code to save my workspace – however what happens is the saved workspace doesnt get created, the dialogue box just disappears and nothing is saved. Code as:

[file,path] = uiputfile('*.mat','Save Workspace As');

so when I call this and fill in the filename in the dialogue box – nothing gets saved at all. Variables 'file' and 'path' are created and are added to the workspace, but a copy of all the variables contained in the workspace under a '.mat' file is not created or added to the current parent folder.

Any ideas as to whats going on here?

Regards,

10B.

Best Answer

From the documentation:

Note: Successful execution of uiputfile does not create a file; it only returns the name of a new or existing file that you designate.

Add these lines after the uiputfile call:

pf = fullfile(path, file);      % Combines ‘path’ & ‘file’
save(pf);                       % Saves Workspace

(I did not test this code, but it should work.)

Related Solutions

MATLAB: Saving everything in the workspace

You can use the command or the function syntax. If the variable names are the values of string variables then command syntax cannot be used.

Try

    >> save_test

it prints to the command window

      Name      Size            Bytes  Class     Attributes
      a         1x1                 8  double

where

    function save_test
        a = 1;
        b = 2;
        Save_Xallback
        whos -file save_test.mat
    end
    function Save_Xallback
        evalin( 'caller', 'save save_test.mat a' );
    end

Answer to the first comment:

The above is a hint rather than a complete answer. I don't exactly understand what you want to achieve. Variables of which workspace do you want to save? Outline a simple example in code. Some basics:

Workspaces

there is the base workspace and
each function has it own workspace

Callbacks

callbacks are "called" from the base workspace; the caller is the base. Thus, evalin( 'caller', ... ) and evalin( 'base', ... ) are equivalent in a callback function.

Command and Function syntax

save myfile.mat a
save( 'myfile.mat', 'a' )

"I'm thinking ... : evalin('caller','save save_test.mat variables')"

The variables of which workspace do you want to save?
Why did you introduce the function, Save_Callback?

"... save the workspace while in any function?"

there is no "the workspace". There are many.

I believe it is difficult to save the complete "state" of a running Matlab program. Special cases maybe.

MATLAB: Get Path of Saved File

use uiputfile() which can return path and file name. then save()

Best Answer

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MATLAB: Saving everything in the workspace

MATLAB: Get Path of Saved File

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