# MATLAB: How to edit matrice to another matrice

image analysisMATLAB

% how to edit matrice A to matrice B with% A=[1 a b c%    2 d e f%    3 g h i];%  % %  B=[ 1 a b 0%      2 b c 0%      3 c a 0%      4 d e 0%      5 e f 0%      6 f d 0%      ...%      9 i g 0 ]%% I have a code for this but it's not workA=[1 a b c; 2 d e f; 3 g h i];[m,n]=size(A);B=zeros(3*m,n);for i=1:3*mB(i,1)=i;B(i,4)=0;endfor k=1:3for i=1:3:3*mB(i,2)=A(k,2);B(i,3)=A(k,3);endfor i=2:3:3*mB(i,2)=A(k,3);B(i,3)=A(k,4);endfor i=3:3:3*mB(i,2)=A(k,4);B(i,3)=A(k,2);endend B

#### Best Answer

• Hi Ahdia,
To perform just what you have asked for, you can do something as below:
a = 10;b = 20;c = 30;d = 40;e = 50;f = 60;g = 70;h = 80;i = 80;A=[1 a b c; 2 d e f; 3 g h i];Atemp = A(:,2:end); % Extacting the different variablesACTemp = circshift(Atemp,-1,2); % Performing the circular shiftCTemp = [Atemp ACTemp]; % Combine both matrices and extract the respective indicesBTemp = reshape([CTemp(:,1:3:end) CTemp(:,2:3:end) CTemp(:,3:3:end)]',[],1);B = zeros(9,4);B(:,1) = 1;B(:,2) = BTemp(1:2:end);B(:,3) = BTemp(2:2:end);
Hope this helps.
Regards,
Sriram