User input to repeat a script

trying to give users the ability to re-run a program with the following

while(1)
    
    
    %%code 
    
    
    m = input('Enter Y to start over. Enter Quiz to move on to the Quiz: ','s');
    if m==['Quiz']
        break
    end
end

next section of code is the quiz

This loop for some reason makes certain graphs not get displayed, and for the program to not run right. the code in the middle is like 200 lines, and runs perfect without the whileloop.

any suggestions on how i could alternatively accomplish this same task of giving the user the ability to start the script from the start again?

Answer 1

[Walter Roberson]

if strcmp(m, 'Quiz')

Remember that in MATLAB, characters with ' around them forms a character vector. 'Quiz' is, for many purposes in MATLAB, the same as uint16([81 117 105 122])

[Matthew]

The while loop it's self works, it just messes with the code. As soon as i add the while loop certain graphs wont be displayed from user input, and the whole thing just doesn't run correctly. i know it's not the code itself becuause it works perfectly fine without being sandwhiched in the whileloop

[Walter Roberson]

Did you remember to use hold off for the axes that you used hold on for ?

[Matthew]

i have no hold on or hold off, pehaps i need to use them to make the while loop work correctly?

[Matthew]

The data be plotted is just one single output, on it's own individual graph

[Dyuman Joshi]

It would be better if you could share the relevant code.

[Matthew]

lets use this code as an example

while(1)

z = linspace(0,4*pi,100);

r = 2*sin(z);

plot(z,r)

xlabel('z')

ylabel('2sin(r)')

title('Plot of the Sine Function')

x = linspace(0,2*pi,100);

y = sin(x);

plot(x,y)

xlabel('x')

ylabel('sin(x)')

title('Plot of the Sine Function')

m = input('Enter Y to start over. Enter Quiz to move on to the Quiz: ','s');

if m==['Quiz']

break

end

end

only the first graph is being displayed, i want both to be displayed, with the ability to restart the program

Answer 2

[Walter Roberson]

When you call "high level plotting commands" such as plot() or contour() or imshow() then by default they clear the current axes before drawing. You can use "hold on" to prevent that

[Matthew]

i figured it out. i added

figure after every plot

then close all if the loop was selected

Answer 3

[Image Analyst]

Try questdlg

while (1)
    % Put script code here.
    
    % Now ask use if they want to do it again.
    promptMessage = sprintf('Do you want to run it again,\nor Quit processing?');
    titleBarCaption = 'Continue?';
    buttonText = questdlg(promptMessage, titleBarCaption, 'Continue', 'Quit', 'Continue');
    if contains(buttonText, 'Quit', 'IgnoreCase', true)
    	return; % or break.
    end
end