How to normalize data between 0 and 1

Hello everyone, i hope you are doing well.
I have the following data.
I want to normalize the data between 0 and 1
How can i do that

回答(3 个)

Given the matrix A that you want to normalise, you could write
A = A/max(A(:));

1 个评论

He wants the output to go between 0 and 1. Your code will not put the min at 0 unless it is already 0. The easiest solution is to just use
A = rescale(A, 0, 1);

请先登录,再进行评论。

X_max = max(X);
X_min = min(X);
X_scaled = (X - X_min) ./ (X_max - X_min); % scales X to [0, 1]

1 个评论

That does not work if X consists of identical values
X = [1 1 1 1]
X = 1×4
1 1 1 1
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
X_max = max(X);
X_min = min(X);
X_scaled = (X - X_min) ./ (X_max - X_min) % scales X to [0, 1]
X_scaled = 1×4
NaN NaN NaN NaN
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
rescale(X)
ans = 1×4
0 0 0 0
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
The code also produces questionable values if the maximum is inf but the points are not all identical
X = [1 2 inf]
X = 1×3
1 2 Inf
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
X_max = max(X);
X_min = min(X);
X_scaled = (X - X_min) ./ (X_max - X_min) % scales X to [0, 1]
X_scaled = 1×3
0 0 NaN
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
rescale(X)
ans = 1×3
NaN NaN NaN
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
If one of the input values is -inf then the code produces all NaN

请先登录,再进行评论。

类别

帮助中心File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

产品

版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by