while writing txt file variables/data are shown in one column instead of being different column

Dear all,

While writing a txt file of dataset, though in work space I see output like L(as I need) but in the txt file, it shows like output of P. My code is also attached.

b = [1,2,3,4];

c = [3,2,4,5];

L = [b c] output(L) = [1,2,3,4, 3,2,4,5]

P = [b;c] output(P) = [1,2,3,4]

[3,2,4,5]

"Code:.

..

.

File = [Y, time_sec, B, GSE, BGSE, VxSE, VySE, VzSE, Density, Temp];

fileID = fopen('Alldata.txt','w');

nbytes = fprintf(fileID,'%12.5f %18.8f %12.5f %12.5f %12.5f %12.5f %12.5f %12.5f %12.5f %12.5f \r\n',File);

fclose(fileID)"

Answer 1

[Voss]

When you fprintf a matrix, MATLAB prints the elements in order of: first column first, followed by the second column, and so on:

M = magic(3)

M = 3×3

8 1 6 3 5 7 4 9 2

% M(1,1) M(2,1) M(3,1) \n
% M(1,2) M(2,2) M(3,2) \n
% M(1,3) M(2,3) M(3,3) \n
fprintf('%d %d %d\n',M) 

8 3 4
1 5 9
6 7 2

To get the elements printed in order of first row first, then second row, etc., transpose the matrix:

% M(1,1) M(1,2) M(1,3) \n
% M(2,1) M(2,2) M(2,3) \n
% M(3,1) M(3,2) M(3,3) \n
fprintf('%d %d %d\n',M.')

8 1 6
3 5 7
4 9 2

[Ismita]

Thank you so much!

[Voss]

You're welcome! Let me know if this solves the problem completely, or if you're still not getting the expected output.