I want to normalize a vector in range -5 to +5. Is it possible?
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A vector like v=rand(1,10)*5+1
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Answers (2)
Guillaume
on 15 Jun 2015
Note that if all you want is generate random numbers between -5 and 5, it's actually one of the examples in the documentation of rand:
r = -5 + (5+5)*rand(10, 1)
Basically, it is
r = lowerbound + (upperbound - lowerbound) * rand
You can of course rescale your vector to whichever range you want:
vrescaled = (v - min(v)) * (newupper - newlower) / (max(v) - min(v)) + newlower
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Guillaume
on 15 Jun 2015
Why couldn't it be? It's a basic linear transformation. As per the formula I've written:
vrescaled = (v - min(v)) * (newupper - newlower) / (max(v) - min(v)) + newlower
where newupper = 5 and newlower = -5, so:
vrescaled = (v - 1) * 10 / 9 - 5;
Andrei Bobrov
on 15 Jun 2015
As wrote Guillaume:
variant 1:
out = A - 5; % if A >= 0 & A<=10
variant 2:
m = min(A(:));
out = (A(:)-m)/(max(A)-m)*10-5;
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