MATLAB: Dimensions of matrices being concatenated are not consistent

dimensions concatenated

Hello. I have a series of output A=2, B=3, C=4,D=5, E=[1;0.1;0.9]. I'm trying to put all of these output together as a row matrix, F. i.e F = [A B C D E]. But i keep getting the error 'Dimensions of matrices being concatenated are not consistent'. Is there a solution to this please?

Best Answer

Because E is a column vector, not a row vector like you're building with all the rest of the numbers, you must transpose E:

A=2
B=3
C=4
D=5
E=[1; 0.1; 0.9]
F = [A, B, C, D, E']

so now F is a row vector. Or else use semicolons and don't transpose E:

A=2
B=3
C=4
D=5
E=[1; 0.1; 0.9]
F = [A; B; C; D; E]

so now F is a column vector.

Related Solutions

MATLAB: Concatenation in a loop

For row wise concatenation:

Here, matrix 'c' is being concatenated to matrix 'a' row wise, number of columns being constant in this case.

a = [];
c = [1 2;3 4];
for i = 1:5
    c = [1*i 2*i;3*i 4*i];
    a = [a;c];   % For row wise concatenation
end

For column wise concatenation:

Here matrix 'c' is being concatenated to matrix 'a' column wise, number of rows being constant in this case.

a = [];
c = [1 2;3 4];
for i = 1:5
    c = [1*i 2*i;3*i 4*i];
    a = [a c];  % For column wise concatenation
end

Hope this helps

MATLAB: How to add the corresponding values in different matrices

C = {a,b,c,d};
c1 = cellfun(@(x)[(1:numel(x))',x(:)],C,'un',0);
c1 = cat(1,c1{:});
out = accumarray(c1(:,1),c1(:,2));

Best Answer

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MATLAB: Concatenation in a loop

MATLAB: How to add the corresponding values in different matrices

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