limit the -ascii output to two decimal points

save(fullfile(PathName,filename),'x','-ascii');

how to save the files upto two decimals

Answer 1

[Walter Roberson]

You cannot do that -- the -ascii flag always outputs a number of digits . However you can

format long g
PathName = '.'; filename = 'test.txt';
x = rand(1,11).' .* 10.^(-5:5).'

x = 11×1

1.0e+00 * 2.49705612941576e-06 3.21530394035424e-05 0.000988743454538754 0.00709450963686247 0.00580482761786273 0.627987242677571 1.0061090249889 11.1394065600517 242.27180145787 3358.60943186604

%if you mean two digits after the decimal place
dlmwrite(fullfile(PathName, filename), x, 'precision', '%.2f')

dbtype(fullfile(PathName, filename))

1     0.00
2     0.00
3     0.00
4     0.01
5     0.01
6     0.63
7     1.01
8     11.14
9     242.27
10    3358.61
11    64152.44

%if you mean two significant digits
temp = round(x, 2, 'significant');
dlmwrite(fullfile(PathName, filename), temp)

dbtype(fullfile(PathName, filename))

1     2.5e-06
2     3.2e-05
3     0.00099
4     0.0071
5     0.0058
6     0.63
7     1
8     11
9     240
10    3400
11    64000

[sagarika rath]

i tried with dlmwrite option but it did not work.

[sagarika rath]

i tried to save the outputs two digits after the decimal using dlmwrite option and its not working.

[Walter Roberson]

The above example shows that using dlmwrite with 'precision' does work.. well, except possibly not for infinite or nan values, or for non-numeric values.

What output are you observing when you try?