produce a code for GUI

Hello can i ask if i want to plot a x-y graph in GUI with below condition

constant x=[0,0.02,0.05],

let user insert input y=[num, num, num] and then plot (x,y)

how about the code should i write? Thank you for your reply.

Answer 1

[Aashray]

Hi @Lim Xiao Hui,

If you just need a quick way for the user to enter three numbers for y and then plot against the fixed x = [0 0.02 0.05], you can use “inputdlg” to prompt for values and then plot them as in the below code:

X = [0 0.02 0.05]; 
answ = inputdlg({'Y(1):','Y(2):','Y(3):'}, 'Enter Y values', 1, {'0','0','0'}); 
if ~isempty(answ) 
    Y = str2double(answ); 
    figure; plot(X,Y,'o-','LineWidth',1.5); grid on; 
    xlabel('x'); ylabel('y'); title(sprintf('X=[0 0.02 0.05], Y=[%g %g %g]',Y)); 
end 

When you run this, MATLAB will show a dialog with three boxes for the user to enter values of “Y(1)”, “Y(2)”, “Y(3)”. After clicking OK, it will plot those points against [0 0.02 0.05].

You can refer to the below attached documentation links for reference:

1. “inputdlg”: https://www.mathworks.com/help/matlab/ref/inputdlg.html
2. “str2double”: https://www.mathworks.com/help/matlab/ref/str2double.html