MATLAB: How can i find centering of matrix

matrix

I have Columns matrix .

Best Answer

Dear Sara, there have been some questions for clarifications. It is not clear, what you want to achieve, because "centering" is no common expression in maths or computer science.

If you want to shift the values of a vector such that the mean value is 0.0, this works for column and row vectors:

xs = x - mean(x);

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MATLAB: Using normrnd to generate a random sequence

The best answer to your question is, “don’t use ‘normrnd’ for that purpose!” It is very much the wrong distribution for that.

You should use ‘rand’ as follows:

x = 0.5*rand(m,n)-0.25;

This will give you a statistically uniform distribution between -0.25 and +0.25, and nowhere else.

MATLAB: Getting rid of for loop in one-liner code

Sakil

ok for a matrix, look:

    A=[1 2;3 4];n=[1:1:10];L=A(:);B=reshape(bsxfun(@power,L,n),[size(A),10])

the resulting exponential matrices are stored in the layers of B

    B(:,:,1) =
         1     2
         3     4
    B(:,:,2) =
         1     4
         9    16
    B(:,:,3) =
         1     8
        27    64
    B(:,:,4) =
         1    16
        81   256
    B(:,:,5) =
               1          32
             243        1024
    B(:,:,6) =
               1          64
             729        4096
    B(:,:,7) =
               1         128
            2187       16384
    B(:,:,8) =
               1         256
            6561       65536
    B(:,:,9) =
               1         512
           19683      262144
    B(:,:,10) =
               1        1024
           59049     1048576

Sakil

would you please be so kind to mark my answer as Accepted Answer,

thanks in advance

regards

John BG

<mailto:jgb2012@sky.com jgb2012@sky.com>

Best Answer

Related Solutions

MATLAB: Using normrnd to generate a random sequence

MATLAB: Getting rid of for loop in one-liner code

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