How to apply a zero mean scaling in another set ?

I did a zero mean scaling:

x_mean = mean(input);
x_out=input-x_mean;

Scaling the output by maximum:

x_max = max(abs(x_out)); %Saving maximum values of each transformation.
x_out=x_out/x_max; %applying the maximum scaled.

How can I apply the scaling in another datset (like a test set) ?

Answer 1

[David Young]

I'm not sure I understand the question, because the answer seems so simple, but assuming that input is a vector, so x_mean and x_max are scalars, do you just want

test_out = (test - x_mean) / x_max;

?