If I have a 3x3 matrix, then I want to display all the elements in 1-column. What I should do is I use a code written like this:
MatrixA =complex(rand(3),rand(3));
yourvector = MatrixA(:);
And the output should be like this:
MatrixA =
0.0368 + 0.8469i 0.4985 + 0.9399i 0.2231 + 0.9552i
0.1905 + 0.4090i 0.4067 + 0.9367i 0.1639 + 0.6461i
0.1353 + 0.6872i 0.2031 + 0.5439i 0.8975 + 0.6536i
yourvector =
0.0368 + 0.8469i
0.1905 + 0.4090i
0.1353 + 0.6872i
0.4985 + 0.9399i
0.4067 + 0.9367i
0.2031 + 0.5439i
0.2231 + 0.9552i
0.1639 + 0.6461i
0.8975 + 0.6536i
However, how am I going to separate the column based on the row?I expect my result should be like this:
0.0368 + 0.8469i
0.1905 + 0.4090i
0.1353 + 0.6872i
0.4985 + 0.9399i
0.4067 + 0.9367i
0.2031 + 0.5439i
0.2231 + 0.9552i
0.1639 + 0.6461i
0.8975 + 0.6536i
Can someone help me? Thank you.

 Akzeptierte Antwort

Fangjun Jiang
Fangjun Jiang am 4 Dez. 2019

0 Stimmen

Don't struggle too much. A for-loop will do. Or displaying "column #" would be more helpful when the array size is bigger.
for k=1:size(a,2)
disp(a(:,k));
disp(' ');
end

3 Kommentare

Nurulhuda Ismail
Nurulhuda Ismail am 4 Dez. 2019
Bearbeitet: Nurulhuda Ismail am 4 Dez. 2019
Thank you so much, it works. Can I ask one more think?
Is it possible to extract the elements that already in 1-column into text file?
fid = fopen('MatrixA.txt','wt');
for ii = 1:size(MatrixA,1)
fprintf(fid,'%g\t',MatrixA(ii,:));
fprintf(fid,'\n');
end
fclose(fid)
I used this code, however, it still extract in a matrix form, not the column form which is what I want.
  1. Notice the difference between "\t" and "\n" in fprintf() in your code
  2. fprintf() won't print complex numbers
  3. Using diary() might give you what you want
diary('MatrixA.txt');
for k=1:size(a,2)
disp(a(:,k));
disp(' ');
end
diary off;
Nurulhuda Ismail
Nurulhuda Ismail am 4 Dez. 2019
Thank you...you make my day for today..

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