MATLAB: Initializing a struct with n-d fields.

n-d arraysstructures

Hi, I have a struct with an indeterminate number of fields. For (very good) reasons I don't want to go into, I want to initialize each of these fields with NaNs. The closest I can find is a post by Shane, in 200 http://blogs.mathworks.com/loren/2008/02/01/structure-initialization/#15%20Initializing%20a%20struct%3Estructure-initialization/#15
that suggests something along the lines of
data = repmat(struct('field1',NaN(2,2,2),'fieldN',NaN(5)),[1,2,3,4]);
What I would like to do instead is build the structure in a loop, something along the lines of:
data = struct();
for ii=1:7;
     data = repmat(struct(field{ii},NaN(2,2,2)),[1,2,3,4]);
end
But of course this doesn't work because the loop line wipes out the pre-existing struct.
There is presumably a way of initializing additional fields in a similar way, without having to do everything in the one line as Shane suggests. Obviously I could build a long string in a loop and evaluate it, but that's a pain.
Any advice would be most appreciated.

Best Answer

for ii=1:7;
     data.(field{ii}) = NaN(2,2,2);
end
data=repmat(data,[1,2,3,4]);
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