How I can append matrices of different dimensions in another matrix?

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I want to make a empty matrix in which i want to append matrix of dimensions 3*1,4*1, 3*1,2*1 etc.
It is better if I am able to append through for loop because I have 8-10 matrix of dimensions 3*1,4*1, 3*1,2*1).
Please suggest by showing or refering example.
Thanks

Accepted Answer

Stephan
Stephan on 14 May 2021
A = randi(10, 3, 1)
A = 3×1
2 1 6
B = rand(4, 1)
B = 4×1
0.2924 0.8584 0.9733 0.8157
C = randi(10,5,1)
C = 5×1
2 3 4 3 2
D = vertcat(A,B,C)
D = 12×1
2.0000 1.0000 6.0000 0.2924 0.8584 0.9733 0.8157 2.0000 3.0000 4.0000
  2 Comments
SANDEEP SINGH RANA
SANDEEP SINGH RANA on 14 May 2021
Edited: SANDEEP SINGH RANA on 14 May 2021
Hi stephan,
Thanks for the help. Can you also tell me how to concatenate these using horzcat. The reason for using horzcat is that when i will call this value (say D), it difficult to specifyor distinguish value of A, B and C matrix. While using horzcat, it showing error. Please help me to overcome this issue.
D = horzcat(A,B,C);
Error using horzcat
Dimensions of arrays being concatenated are not consistent.
Stephan
Stephan on 14 May 2021
Edited: Stephan on 14 May 2021
I dont recommend to do so, because you have to transpose them additionally, which doesnt make much sense. If you need a row vector you could also transpose the result of my code instead of transposing all the elements and then use horzcat:
A = randi(10, 3, 1);
B = rand(4, 1);
C = randi(10,5,1);
D = (vertcat(A,B,C)).'
D = 1×12
5.0000 5.0000 7.0000 0.1645 0.1534 0.2924 0.6751 10.0000 2.0000 2.0000 6.0000 6.0000
Maybe you might want to use a cell array:
D = {A, B, C}
D = 1×3 cell array
{3×1 double} {4×1 double} {5×1 double}
There are a many ways to do what you want.

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