How to normalize data ?

2018 12 16
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更新时间：2018 12 16
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Hi, I have data with dimension 1x25, where
x = rand(1,25);
D = size(x,2);
I'm trying using this code, but the result is NaN. Please help me, to fix my code. Thanks
for col = 1: D
x(:,col)=double(x(:,col)-mean(x(:,col)));
end
for col = 1: D
x(:,col)=double(x(:,col)/std(x(:,col)));
end

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Stephan
Stephan 2018-12-16

1 个投票

x = rand(1,25);
x = (x-mean(x))/std(x)

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Oman Wisni
Oman Wisni 2018-12-16
thanks for the answer sir, but when I use in matrik with size 220x25 dimension, I get error like this :
x = rand(220,25);
x = (x-mean(x))/std(x)
Error using -
Matrix dimensions must agree.
Stephan
Stephan 2018-12-16
编辑：Stephan 2018-12-16
Which Matlab release do you use? In 2018b the result is a 220x1 vector.
Oman Wisni
Oman Wisni 2018-12-16
I used matlab R2015a

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