MATLAB: How to concatenate N matrices

matrix manipulation

I have N matrices of equal columns.Now i want to concatenate them vertically.I have like 40 matrices. Is it possible for me to use for loop to concatenate N matrices vertically?

Matrices have name data(1,1).data to data(40,1).data I cant do A = vertcat(data(1,1).data,data(2,1).data,data(3,1).data and so on)

I need a loop for this from i=1:40

Best Answer

out = cat(1,data.data);

Related Solutions

MATLAB: Concatenate

Paulo answered the question as you phrased it, but if you know the exact number of results you are producing (or if the maximum number of results is "reasonably close" to the likely number of results), then you are better off pre-allocating memory for the results:

a = zeros(10,1);
for b = 1:10
  a(b) = 3*b+5;  %for example
end

When you get to thousands of elements, pre-allocating can be much much faster.

MATLAB: Concatenate

This makes the 5x3 that you requested.

c1 = {'hello' 'world' 'Happy Tuesday'};
c2 = {'Need' 'coffee' 'now'};
m1 = magic(3);
C = vertcat(c1,c2,num2cell(m1));

To make a 3x5 use;

C = horzcat(c1',c2',num2cell(m1));

Best Answer

Related Solutions

MATLAB: Concatenate

MATLAB: Concatenate

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