MATLAB: Error using < Matrix dimensions must agree.

Question

a=randi(100,1,10);

b=randi(100,1,10);

c=randi(100,1,10);

A=[a;b;c]

A_max=max(A);

A(A<0.15*A_max)=nan

it gives following error

Error using <

Matrix dimensions must agree.

How to rectify it…

Answer 1

You apparently have R2016a or earlier, so you do not have ‘automatic implicit expansion’ that was part of R2016b and later versions.

Try this:

idx = bsxfun(@lt, A, 0.15*A_max);
A(idx) = NaN;

You can combine them in one line if you like. This code illustrates the approach.