Changing default values for inputdlg()

I'm trying to work out a way such that if a user inputs some values into a dialogue box then exits it, those previous values are saved and then reused as the default values when the user open it again.

I've tried using the command in a loop with variables for the default answers which I then change i.e with m = answer(1). But when I try using variables instead on actual numbers like {'1', '2', '3'}, I get an error saying 'Default Answer must be a cell array of strings.'

Does anyone know how this may be done?

Answer 1

[Mischa Kim]

Michael, does this do what you need?

 defaultanswer = {'20','hsv'};
 for ii = 1:2
    prompt        ={'Enter the matrix size for x^2:',...
                    'Enter the colormap name:'};
    name          = 'Input for Peaks function';
    numlines      = 1;
    defaultanswer = inputdlg(prompt,name,numlines,defaultanswer);
 end

I suspect that your variables are numeric, in which case you need to convert to string, using, e.g., the num2str command.

[Michael]

It seems to on its own, im trying to work it into my program to see if it works in practice. I was also wondering what ii = 1:2 means/does?

[Mischa Kim]

I just used the loop to open the dialog twice to show how to store answers from the dialog box for later use. Of course, you can also call inputdlg again and again in different parts of your code.

[Michael]

Still having a bit of trouble with this,

I've written this out:

        def = {'0.6','16','16','2','0.6','0.7','0.1','4'};
        prompt ={'Mass', 'Spring 1', 'Spring 2', 'Damping Coefficent', 'Distance', 'Initial Displacement', 'Time Step', 'Total Time'};
        dlg_title = 'Parameters';
        numlines = 1; 
        options.Resize='on';
        answer = inputdlg(prompt,dlg_title,numlines,def,options);
        def = answer;

disp(def)

When the dialogue box open, the default values I specify at the begining are present, and when I change the values, and exit the box, disp(def) shows the default answers have been changed to the new values I put in. However when I open the box back up, the default values reset to what they were originally.

I've been having a lot of trouble with 'the variable might be used before it is defined' as i cant simply set the default answer at the begining to the final answer at the end before said answer is put in.

Do you have any other ideas?