How to create a gif?

I have a code to generate a wave equation gif.but it just includes the last frame and I don't know what the problem is.here is my code:

clear;clc;close all;
%figure('Name','wave equation');
a = 1;
t0 = 1;
syms x;
f = @(x) ((a/t0)*x + a).*(x>-t0 & x<0) + ((-a/t0)*x + a).*(x>=0 & x<t0);
for c = 0:0.05:2
    my_plot = fplot((f(x-c) + f(x+c))/2,[-t0 t0]);
    frame = getframe(1);
    im = frame2im(frame); %pause(0.01);
    [imind,cm] = rgb2ind(im,256);
    imwrite(imind,cm,"C:\Users\ernika\wave_equation.gif",'gif'); %saved as mygif1
    drawnow;
    if(c~=2)
        delete(my_plot)
    end
end

Answer 1

[Simon Chan]

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