save to 2nd decimal, then add brackets

I needed to round a matrix of double to the second decimal. And also convert the second row such that each entry is in brackets, and then save to mat, txt, or xls.

This is the initial matrix

A=[1.224, 1.338;
 2.451, -2.367;
 1.222, 4.123]

For rounding, I tried

sprintf('%.2f\n',A)

But it generates a vector not a matrix. For adding the brackets, I tried to use

strcat('(',A(2,:),')'), not working.

The change should result in this (either a mat or txt or xls)

B=[1.22, 1.34;
 (2.45), (-2.37);
 1.22, 4.12]

Answer 1

[Stephen23]

A = [1.224,1.338;2.451,-2.367;1.222,4.123];
fdir = '.'; directory
name = 'myfile.txt';
fmt = 'B=[%.2f, %.2f;\n(%.2f), (%.2f);\n%.2f, %.2f]';
[fid,msg] = fopen(fullfile(fdir,name),'wt');
assert(fid>=3,msg)
fprintf(fid,fmt,A.');
fclose(fid);

[Dave]

thanks, but is there a way to have in the txt/xls/mat saved file just the new matrix? The new matrix should be 3x2

[Dave]

got it using \t, thanks man

[Stephen23]

The code save a file that produces exactly what you asked for:

B=[1.22, 1.34;
(2.45), (-2.37);
1.22, 4.12]

If you want something else please specify it clearly.