MATLAB Programming

6 Data Import and Export
m = memmapfile('records.dat', ...
'Offset', 1024, ...
'Format', {'uint32' [4 10 18] 'x'})
m =
Filename: 'd:\matlab\mfiles\records.dat'
Writable: false
Offset: 1024
Format: {'uint32' [4 10 18] 'x'}
Repeat: Inf
Data: 13x1 struct array with fields:
x
A = m.Data(1).x;
whos A
Name Size Bytes Class
A 4x10x18 2880 uint32 array
Grand total is 720 elements using 2880 bytes
You can change the data type, array shape, or field name that MATLAB
applies to the mapped region at any time by setting a new value for the
Format property of the object:
m.Format = {'uint64' [30 4 10] 'x'};
A = m.Data(1).x;
whos A
Name Size Bytes Class
A 30x4x10 9600 uint64 array
Grand total is 1200 elements using 9600 bytes
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