Saves a two dimensional dataset to ASCII file
Syntax:
>> save_xye (w) % Prompts for file to write to
>> save_xye (w, null_value) % Substitute intensity of empty cells with
% the numerical value empty (default: NaN)
>> save_xye (w, file) % Write to named file
>> save_xye (w, null_value, file)
Unless otherwise specified, bins where there is no data are written as
having NaN (i.e. not-a-number) for the signal and zero for the standard deviation.
You can always substitue a different value e.g. -10^30 or 0 by
assigning a value to the optional parameter null_value.
The data is saved in the format:
x1(1) x2(1) y(1,1) e(1,1)
x1(2) x2(1) y(2,1) e(2,1)
: : : :
x1(n1) x2(1) y(n1,1) e(n1,1)
x1(1) x2(2) y(1,2) e(1,2)
x1(2) x2(2) y(2,2) e(2,2)
: : : :
x1(n1) x2(2) y(n1,2) e(n1,2)
x1(1) x2(3) y(1,3) e(1,3)
: : : :
x1(n1) x2(n2) y(n1,n2) e(n1,n2)