MATLAB: Defining arrays of structure

struct

In order to increase the speed of processing, I am trying to define an array of structures before proceeding to my main code, say, 100×50 arrays of the same structure. How can I define it beforehand?
struct('dir1',{},'dir2',{},'x1',{},'x2',{},'x3',{},'x4',{})
is the following correct?
n1=100;
n2=50;
data{n1,n2}=struct('dir1',{},'dir2',{},'x1',{},'x2',{},'x3',{},'x4',{})
Thanks a lot for your quick reply 🙂

Best Answer

C = cell(100, 50);
S = struct('dir1', C, 'dir2', C ,'x1', C, 'x2', C, 'x3', C, 'x4', C);
Another method:
% S must be undefined before, otherwise use "clear('S')"
S(100, 50) = struct('dir1', [], 'dir2', [] ,'x1', [], ...
                    'x2', [], 'x3', [], 'x4', []);
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