I used my own data rather than your text files because it is easier to test them.
I would do this:
d = randi([-99 99], 10, 1); % Create Data
extr = [min(d) max(d) max(d)-min(d)]; % Extremes & Ranges
fwd_tran = (d - -sign(extr(1))*extr(1))/extr(3); % Map To (0,1)
rev_tran = extr(3)*fwd_tran + -sign(extr(1))*extr(1); % Map To Original
I believe this will do what you want. It is easy to create anonymous functions from ‘fwd_tran’ and ‘rev_tran’ if you need to:
fwd_tran = @(x) (x - -sign(extr(1))*extr(1))/extr(3); % Map To (0,1)
rev_tran = @(x) extr(3)*x + -sign(extr(1))*extr(1); % Map To Original
Test1 = fwd_tran(d);
Test2 = rev_tran(Q1);
Be sure to import your data and assign ‘extr’ before you use the functions.
