How do I preallocate a struct array from the importdata function (In a loop)

Hi, I would like to preallocate my data space that comes from the importdata command, but I am having trouble because it is just a little too complicated for me. After I run the importdata in the loop I end up with:

x =

1x10 struct array with fields: data textdata

x.data is a 21x1248 double array

x.textdata is a 4x22 cell array

This comes from something similar to:

for fnum=1:10
    fname=sprintf('file%02d.csv', fnum);
    x(fnum)=importdata(fname, ',', 4);
end

what is the command I should run to preallocate this structure array?

Thanks!

Answer 1

[Albert Yam]

http://blogs.mathworks.com/loren/2008/02/01/structure-initialization/