MATLAB Programming

6 Data Import and Export
A = [ 1 2 3 4 ; 5 6 7 8 ];
use the save function, as follows:
save my_data.out A -ASCII
If you view the created file in a text editor, it looks like this:
1.0000000e+000 2.0000000e+000 3.0000000e+000 4.0000000e+000
5.0000000e+000 6.0000000e+000 7.0000000e+000 8.0000000e+000
By default, save uses spaces as delimiters but you can use tabs instead of
spaces by specifying the -tabs option.
When you use save to write a character array to an ASCII file, it writes the
ASCII equivalent of the characters to the file. If you write the character string
'hello' to a file, save writes the values
104 101 108 108 111
Using the dlmwrite Function
To export an array in ASCII format and specify the delimiter used in the file,
use the dlmwrite function.
For example, to export the array A,
A = [ 1 2 3 4 ; 5 6 7 8 ];
as an ASCII data file that uses semicolons as a delimiter, use this command:
dlmwrite('my_data.out',A, ';')
If you view the created file in a text editor, it looks like this:
1;2;3;4
5;6;7;8
Note that dlmwrite does not insert delimiters at the end of rows.
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