looking for a function similar to mapminmax

Hi,

As far as I know mapminmax Map matrix row minimum and maximum values to [-1 1].What I am looking for is that I want the data to be transformed into the interval [0,1].

For instance after using artificial neural network, I have gained the following vector for my response: r= 0.36293 46.949 136.57 1159

But the original example has written its output in something like :

r= 0.28 0.58 0.16 0.29

How can I change my data to be able to compare my result with that one?

Thank in advance for your comments

Answer 1

[Greg Heath]

1. Convert targets to closed interval [0, 1]

2. Use LOGSIG for the output transfer function

Thank you for formally accepting my answer

Greg

Answer 2

[Greg Heath]

 minA = min(A(:))
 maxA = max(A(:))

 (B- minB)/(maxB-minB) = (A-minA)/(maxA-minA)

B = minB +(maxB-minB)*(A-minA)/(maxA-minA)

Hope this helps

Greg

Answer 3

[Jos (10584)]

A = ceil(10*rand(4,4)) % example data

A = A - min(A(:)) % map minimum value of A to 0 (thereby changing the maximum)
A = A ./ max(A(:)) % scale between 0 and 1

Answer 4

[Respaco]

Thanks, but in this way my minimum changes to zero. You know preferably the data are between zero and one. Anything for that?

[Jos (10584)]

But you asked for that! To map the Minimum not to -1 but to zero …

Can you rephrase your question?

[Respaco]

Yes you are right I did. Now I'd like to change the variables ,x such that to 0<x<1

[Jos (10584)]

How exactly? What is the relation between the input and output?

Input = [1 2 3]
Output = ... ??? % but all values between 0 and 1