reshaping multiple data sets

I have a 50x4 double. I want to reshape each column of the matrix by taking the mean of every 10 elements.

I have tried writing a loop to do this but it only writes the last iteration. I have tried indexing into this but I get the error:

Brace indexing is not supported for variables of this type.

for a = 1:4;
Out = mean(reshape(vel{a}(1:50),10,[]),1); 
end 

Answer 1

[Voss]

The error happens because vel is not a cell array.

To keep the result from each iteration of the loop, you can make Out a matrix and store the result in each column of Out:

Out = zeros(size(vel,1)/10,4);
for a = 1:4
    Out(:,a) = mean(reshape(vel(:,a),10,[]),1).'; 
end