File Array Object
file_array - create a file_array
horzcat - horizontal concatenation
vertcat - vertical concatenation
size - size of array
length - length of longest dimension
subsref - subscripted reference
end - last index in an indexing expression
resize - resize (but only of simple file_array structures)
other operations are unlikely to work.
Example usage.
% Create a file array object by mapping test_le.img
% to a 256x256x100 array, of datatype 16, stored
% in a little-endian way starting at byte 0.
fa0 = file_array('test_le.img',[256 256 100], 16,0,0)
% Creating an object from test_be.img, but skipping
% the first plane of data. Data stored as big-endian
fa1 = file_array('test_be.img',[256 256 99], 16,1,512)
% Reshape procedure
fa2 = reshape(fa1,[128 2 256 99])
% Concatenation
fa3 = [[fa0 fa0]; [fa0 fa0]]
fa4 = cat(3,fa0,fa1)
% Note that reshape will not work on the above
% concatenated objects
% Accessing values from the objects
img = fa1(:,:,40);
pixval = fa4(50,50,:);
small = fa1(1:2:end,1:2:end,40);
% Determining dimensions
size(fa4)
size(fa2)
length(fa0)
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Copyright (C) 2005 Wellcome Department of Imaging Neuroscience