Creat 1000 different matrix

I have 1000 different values of Bi, I want to creat 1000 different C matrix of order (12, 1) , where Each element of (12, 1) , ist matrix contains ist value of Bi and each element of (12, 1) ,2nd matrix contains 2 nd value of Bi. and so on. And each different 1000 matrix will print in Command windows and it's name like C1, C2, C3... C1000.

Answer 1

[Steven Lord]

Can you define variables with numbered names like C1, C2, C3, ... ? Yes.

Should you do this? Generally we recommend against it. See that page for alternatives you should use instead.

[Deepesh Kumar Gupta]

Okay Steven, instead of C1, C2.. C1000 you can take C(1), C(2).. C(1000).and please help in this code

[Stephen23]

@Deepesh Kumar Gupta: either use a cell array to hold all of those matrices:

https://www.mathworks.com/help/matlab/cell-arrays.html

or one numeric ND-array:

https://www.mathworks.com/help/matlab/math/multidimensional-arrays.html

What did you try so far?

[Deepesh Kumar Gupta]

I have to print all 1000 matrix in command window.

Thank you in advance

[Stephen23]

@Deepesh Kumar Gupta: please show us what you have tried so far.

[Deepesh Kumar Gupta]

c=0.01; 
d=.013;
m=1000;
ri=c+(d-c).*rand(m,1);
h=315;
K=44.5;
Bi=(h*ri) /K;
for k=1:1000
    C=zeros(12,1)
    for i=1:12
        C(i,:)=Bi(k)
    end
end

[Deepesh Kumar Gupta]

I am getting only one (12, 1) matrix, i have to print such 1000 matrix

[Stephen23]

c = 0.01;
d = 0.013;
m = 1000;
ri = c+(d-c).*rand(1,m);
h = 315;
K = 44.5;
Bi = (h*ri)./K

Bi = 1×1000

0.0757 0.0807 0.0876 0.0810 0.0781 0.0866 0.0910 0.0856 0.0741 0.0887 0.0910 0.0854 0.0813 0.0713 0.0860 0.0914 0.0905 0.0809 0.0748 0.0788 0.0893 0.0723 0.0761 0.0732 0.0807 0.0917 0.0891 0.0755 0.0741 0.0764

C = num2cell(repmat(Bi,12,1),1)

C = 1×1000 cell array
  Columns 1 through 588

    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    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  {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    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double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    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  {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}

  Columns 589 through 1000

    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    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double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    {12×1 double}    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double}    {12×1 double}

C{1} %  Checking the first cell

ans = 12×1

0.0757 0.0757 0.0757 0.0757 0.0757 0.0757 0.0757 0.0757 0.0757 0.0757

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html

[Deepesh Kumar Gupta]

I am still not able to print C{1} of order (12,1) , can u please be in more details

[Stephen23]

Hint: use a loop.

[Steven Lord]

A = {magic(4), ones(2, 3, 4), @sin} % A sample cell array

A = 1×3 cell array
    {4×4 double}    {2×3×4 double}    {@sin}

celldisp(A) % Display all elements of the cell array

 
A{1} =
 
    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1

 
 
A{2} =
 

(:,:,1) =

     1     1     1
     1     1     1


(:,:,2) =

     1     1     1
     1     1     1


(:,:,3) =

     1     1     1
     1     1     1


(:,:,4) =

     1     1     1
     1     1     1

 
 
A{3} =
 
    @sin

 

[Deepesh Kumar Gupta]

I have 1000 Rs matrix of order(1,12) and 1000 values Bi .I want to create 1000 A matrix of order (12,12). How can I create A matrix .

% matrix calculation for i=1:1000 A=zeros(12,12);

for k=1:12 for j=1:12 if j==1 A(k,j)=1./(Rs{i}(k))+Bi(i).*log(Rs{i}(k)); else A(k,j)=((j-1)*((Rs{i}(k)).^(j-1)+(Rs{i}(k)).^(1-j))./Rs{i}(k)+Bi(i)*((Rs{i}(k)).^(j-1)-(Rs{i}(k)).^(1-j)))* cos((j-1).*g(k)); end end end end

[Stephen23]

@Deepesh Kumar Gupta: please format your code properly. Badly formatted code discourages people from helping you.

% matrix calculation for i=1:1000 A=zeros(12,12);
for k=1:12
    for j=1:12
        if j==1
            A(k,j)=1./(Rs{i}(k))+Bi(i).*log(Rs{i}(k));
        else
            A(k,j)=((j-1)*((Rs{i}(k)).^(j-1)+(Rs{i}(k)).^(1-j))./Rs{i}(k)+Bi(i)*((Rs{i}(k)).^(j-1)-(Rs{i}(k)).^(1-j)))* cos((j-1).*g(k));
        end
    end
end
end

If this code works and you need to repeat it 1000 times, then you can simply nest it inside another loop and either:

1. assign the matrices to a cell arraz, much like you are already doing for Rs, or
2. assign the matrices to one ND array.

Give it a try, e.g. cell array (just like Rs):

N = 1000;
C = cell(1,N);
for ii = 1:N
    .. your code
    C{ii} = your matrix
end

[Deepesh Kumar Gupta]

Thank you very much @Stephen .this code works