Conversion of a matrix into multiple column vectors

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Subham Burnwal el 11 de Mzo. de 2015
Comentada: Alpha Bravo el 20 de Abr. de 2020
If we have a matrix A=[1 2 ; 3 4 ; 5 6] then it will be converted to vectors like x1= [1 3 5] x2= [2 4 6]
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Stephen23 el 11 de Mzo. de 2015
Editada: Stephen23 el 20 de Abr. de 2020
If you know how many columns you want, then you can simply assign them in code like this:
>> A = [1,2;3,4;5,6];
>> X1 = A(:,1);
>> X2 = A(:,2);
If you have many columns, or an unknown sized matrix, then you can split it up using num2cell with the second optional argument:
>> B = num2cell(A,1);
>> B{1}
ans =
1
3
5
>> B{2}
ans =
2
4
6
Accessing the contents of the cell array is simple and efficient using indexing:
Accessing dynamically named variables like x1, x2, x3, etc. is not recommended, because it forces you into writing slow, complex, obfuscated, buggy code that is hard to debug. Read this to know why:
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Stephen23 el 20 de Abr. de 2020
"is the code above correct?"
I don't know. What do you expect that code to do?
Alpha Bravo el 20 de Abr. de 2020
kindly;
1. reduce m x n matrix to its frequency count
2. crosstab into 2x 2
3. subject those to compute chi2 and p
4. interpret that result
5. that is, to find the chi2, and p of the given matrix; the goodness of fit test

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Giorgos Papakonstantinou el 11 de Mzo. de 2015
Editada: Giorgos Papakonstantinou el 11 de Mzo. de 2015
x1 = A(:,1).';
x2 = A(:,2).';
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