How can I scales the entries of an array to the interval [0,1] in matlab version 2014a?

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debojit sharma 2021-5-23

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回答： DGM 2021-5-23

How can I scales the entries of an array to the interval [0,1] in matlab version 2014a? The rescale function in matlab 2014a is not working for this purpose.

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Answer 1

Walter Roberson 2021-5-23

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Use the deceptively named mat2gray() function.

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Answer 2

DGM 2021-5-23

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在 MATLAB Online 中打开

Something like this:

A = rand(5)*10-4 % some random test array
A = 5×5
    5.3835   -0.6412    4.3718    3.0501    4.8399
    0.5035    2.0990    2.0365    0.5249    3.6086
    1.7182    3.8267   -3.1955    4.3812    5.3857
   -0.4145   -3.3937   -1.3723    2.9159   -0.8788
   -3.1738    0.6271   -0.6550    3.2316    4.6812
mn = min(A(:));
mx = max(A(:));
B = (A - mn) ./ (mx-mn)
B = 5×5
    0.9997    0.3135    0.8845    0.7340    0.9378
    0.4439    0.6256    0.6185    0.4463    0.7976
    0.5823    0.8224    0.0226    0.8856    1.0000
    0.3393         0    0.2302    0.7187    0.2864
    0.0250    0.4580    0.3119    0.7546    0.9198