MATLAB: How to plot sin(x),sin​(2x),…,s​in(nx) for an input n all on the same graph? Matrix dimensions must agree error

MATLABmatrixplot

I'm trying to plot sin(x) and sin(2x) and 3x and so on up to sin(nx) all on the same graph. My code right now is as follows.
x=[-2*pi:pi/64:2*pi];
i = input('Enter a positive whole number: \n');
z=[1:i];
y=sin(x.*z);
for z = [1:i]
    plot(x,y);
end
It's giving me an error saying:
Matrix dimensions must agree.
Error in lab5_exercise2 (line 9)
y=sin(x.*z);

Best Answer

Put the y= statement inside the loop:
x = -2*pi : pi/64 : 2*pi;
n = input('Enter a positive whole number: ');
for z = 1 : n
	y = sin(x.*z);
	plot(x,y, '.-');
	hold on;
end
grid on;
xlabel('x', 'FontSize', 15);
ylabel('Y', 'FontSize', 15);
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