Covert vector into an image using matlab?

I am trying to convert vector into an image using the code below

clear variables

load(Exe4_2022.mat')

n = length(b);

figure,

imagesc(reshape(b,sqrt(n),sqrt(n))),

colormap(gray),

axis off;

But I am getting this error. Could anybody tells me how to resolve this issue??

Error using reshape

Size arguments must be real integers.

I have attached the "Exe4_2022.mat" file with this post.

Thanks

Answer 1

[Matt J]

n is not a perfect square, so sqrt(n) will not give you valid integer dimensions for your image. Choose different dimensions.