MATLAB: How to merge two matrices

concatenaionMATLABmatrix

I have two matrices with a= 20×6 and b=20×3 how can I merge them as 20×9.

thanks.

Best Answer

Horizontal concatenation

 c=[a b]

example

for horizontal concatenation

 a=rand(20,6);
 b=rand(20,3);
 c=[a b]

for vertical concatenation

 a=rand(6,20)
 b=rand(3,20)
 c=[a;b]

Related Solutions

MATLAB: How can we join two matrices of two dimmention

Abdulkareem, simply use

 C = [A; B];

where A and B are your 476-by-11 matrices.

 A = [1 2 3; 4 5 6];
 B = [9 8 7; 6 5 4];
 C = [A; B]
 C =
     1     2     3
     4     5     6
     9     8     7
     6     5     4

MATLAB: Matrix/Image Merging

Repaste New trix every time!

clear Merge
A=[1 2 3 4 5; 6 7 8 9 10; 11 12 13 14 15];
B=[16 17 18 19 20 21; 22 23 24 25 26 27; 28 29 30 31 32 33; 34 35 36 37 38 39;40 41 42 43 44 45];
Awant = 8;
Bwant = 42; 
[ra ca] = find(A==Awant,1,'first');
[rb cb] = find(B==Bwant,1,'first');
D = abs(diff([ra ca;rb cb],1,1));
sd = sign(diff([ra ca;rb cb],1,1));
corners = abs(sum(sd));
if ~corners
if sd(1) == 1
    Merge(1:(size(B,1)),(D(2)+1:(size(B,2)+D(2)))) = B;
    Merge((D(1)+1):(size(A,1)+D(1)),1:(size(A,2))) = A;
else
    Merge((D(1)+1):(size(B,1)+D(1)),1:(size(B,2))) = B;
    Merge(1:(size(A,1)),(D(2)+1:(size(A,2)+D(2)))) = A;
end
elseif corners == 1;
if ~sd(1)
    Merge(1:(size(B,1)),1:(size(B,2))) = B;
    Merge((D(1)+1):(size(A,1)+D(1)),(D(2)+1:(size(A,2)+D(2)))) = A;
else
    Merge(1:(size(B,1)),1:(size(B,2))) = B;
    Merge((D(1)+1):(size(A,1)+D(1)),(D(2)+1:(size(A,2)+D(2)))) = A;
end    
else    
if sd(1) == 1
    Merge(1:(size(B,1)),1:(size(B,2))) = B;
    Merge((D(1)+1):(size(A,1)+D(1)),(D(2)+1:(size(A,2)+D(2)))) = A;
else
    Merge((D(1)+1):(size(B,1)+D(1)),(D(2)+1:(size(B,2)+D(2)))) = B;
    Merge(1:(size(A,1)),1:(size(A,2))) = A;
end
end

Should work for any case.

Best Answer

Related Solutions

MATLAB: How can we join two matrices of two dimmention

MATLAB: Matrix/Image Merging

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