Is there any way to normalize any matrix values to be between (-1) and (1)?
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Sarah A
on 12 Jan 2019
Commented: Walter Roberson
on 13 Jan 2019
Hello,
Is there any way to normalize any matrix values to be exactly between (-1) and (1)? I attached the matrix.
regards,
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Accepted Answer
Image Analyst
on 12 Jan 2019
You can use mat2gray(), which normalizes data from 0-1 then just scale and subtract 1 to get into the range -1 to +1:
M = 2*mat2gray(M)-1;
A nice single-line solution.
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Walter Roberson
on 13 Jan 2019
They would display as -1.0000 and 1.0000 especially with short format in effect, but if you take 1-max(M(:)) and min(M(:))+1 then you will see non-zero residues.
More Answers (2)
madhan ravi
on 12 Jan 2019
Edited: madhan ravi
on 12 Jan 2019
a=-1;
b=1;
N=100; % number of points
A=(b-a).*rand(N,1)+a; % creates numbers inbetween -1 and 1
Steven Lord
on 12 Jan 2019
Use the normalize function with the 'range' method if you're using release R2018a or later.
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