Why am I not getting an array of values?

I am trying to plot a sinc function and eventually use it for a convolution. The sinc function is defined as h = sin(n*pi/2)/(n*pi/2), where n = -7:7.

When I run my code as is, ith becomes a single value instead of an array. However I noticed that if I define my function as h = sin(n*pi/2), h becomes an array of 1x15, which is what I want. Can somebody explain why this happens and how to go about this.

Thank you in advance.

n = -7:7; % an array of 1x15 
p = (pi*n/2);

h = sin(pi*n/2)/(pi*n/2); % this becomes a single value 
h1 = sin(p)/p; % this becomes an array of 1x15

Answer 1

[Voss]

Use element-wise division, ./

n = -7:7; % an array of 1x15 
p = (pi*n/2);

h = sin(pi*n/2)./(pi*n/2) % this becomes an array of 1x15 

h = 1×15

-0.0909 0.0000 0.1273 -0.0000 -0.2122 0.0000 0.6366 NaN 0.6366 0.0000 -0.2122 -0.0000 0.1273 0.0000 -0.0909

h1 = sin(p)./p % this becomes an array of 1x15

h1 = 1×15

-0.0909 0.0000 0.1273 -0.0000 -0.2122 0.0000 0.6366 NaN 0.6366 0.0000 -0.2122 -0.0000 0.1273 0.0000 -0.0909

isequaln(h,h1)

ans = logical
   1

[Justin Goh]

Thank you!