print a matrix in output file

Good morning\evening

I tried to print a result matrix R in an output file.

fprintf(fid,'%.3f\t\n %.3f\t\n %.3f\t\n',R);

Actually, the output prints the matrix row by row.

Can you help me?

Regards, Ayda

Answer 1

[Walter Roberson]

Each of the \n in the formats indicates that you want to start a new line.

The \t you have indicate that you want a tab before the newline; that would be somewhat unusual.

Anyhow, you should use R.' (the transpose of R) as the argument to fprintf() instead of just R

[Ayda]

Thanks Mr. Walter for answering

but am still confuse ..

where i should but \n

I tried

fprintf(fid,'%.2f %.2f %.2f\n',R');

but it did not work

[Walter Roberson]

What size is your array R, and how do you want it to look when it is printed out?

I note that you used R' rather than the R.' that I indicated. The effect is the same for real-valued matrices, but if your R happened to contain complex values then using R' would lead to incorrect printout, as R' means the "conjugate transpose" (that is, the result is the transpose of the result of taking the complex conjugate of each item.)

The format you have given would be suitable for a matrix R which is 3 columns wide and you want two decimal places of each value printed out. The output would, though, appear "ragged" such as

11.23 49.18 28.20

5.36 33.62 -1.98

as you have not requested that a fixed number of characters be used per column.

[Ayda]

sorry i did not notice that you say .'

Thanks alot

its works =)