MATLAB Matlab - I want to create row matrix

[thailovejj]

I want to create row matrix A by using row matrix B_1 , B_2 , B_3 ,...,B_7

Example

B_1 = [1 2 3];
B_2 = [6 9 3];
B_3 = [4 7 5];
.
.
.
B_7 = [9 6 3];

Then A = [1 2 3 6 9 3 4 7 5 ... 9 6 3];

My way is

mea = input('Insert MEA No. :');

y = load(sprintf('%d.txt',mea),'-ascii');

for i=1:7
eval(['B_' num2str(i) '=y(i,:)']);
end

above code is create matrix B_1 - B_7

and Then

A = [B_1 B_2 B_3 ... B_7];

but I want the code which can use for other case.

Thank you

 

[JesseC]

If you start using the eval statement, you'll forever be stuck using it later on which makes code very difficult to understand.

Two alternatives would be to create a cell array:

A = [];
for i=1:7
B{i}=y(i,:);
A = [A B{i}]
end

or, if the B vectors are all the same length, then why use B at all?:

A = [];
for i=1:7
A = [A y(i,:)];
end