Combining Matrices

hello im Ahmat i have encountered a problem it is related to the this one http://www.mathworks.com/matlabcentral/answers/13101-combine-many-matrices-into-one

but my problem is different i have A1,A2...An matrices and i want to combine them as B=[A1;A2;..;An] how can i do that in a loop or something(i have to do in in a loop )

ex A1=[2 3];A2=[4 5];A3=[5 6]; B=[2 3;4 5;5 6]

thanks

Answer 1

[bym]

B = [A1; A2; A3];

[Ah01mat]

i have to do it in a loop what if i have billion of matrices ? what can i do

[bym]

literally 'billions'? (apologies to Carl Sagan)

Answer 2

[Fangjun Jiang]

Hope it's not too late. The better approach is not to name your variable as A1, A2, A3. This problem has been asked numerous times on this forum.

http://www.mathworks.com/matlabcentral/answers/143-how-do-i-make-a-series-of-variables-a1-a2-a3-a10

[Ah01mat]

No I didnt ask for giving names to the variables I just need to combine them or merge them in a loop

[Fangjun Jiang]

The point is, if the data is not named as A1, A2, A3, you don't need to combine them at all. Are you taking the data from somewhere else, or the data is created by you?

[Walter Roberson]

Read the FAQ in reverse. If the FAQ tells you how to assign to variable names in a loop, then by flipping the statements around, it also tells you how to retrieve from variable names in a loop.