How can I use fprintf to print matrix by column?
조회 수: 77 (최근 30일)
이전 댓글 표시
This is my code:
x = [1:0.6:4];
k = str2double (input ('Enter a value k: ','s'));
y = [x',(x.*k)',(x.^3)'];
disp ('The values of y are the following:');
y2 = [x.*k]';
y3 = [x.^3]';
fprintf ('%.4f %.4f %.0f\n',[x';y2;y3]);
I need to print the matrix y on the screen like this :
The values of y are the following:
1.0000 2.0000 1
1.6000 3.2000 4
2.2000 4.4000 11
2.8000 5.6000 22
3.4000 6.8000 39
4.0000 8.0000 64
But it keeps printed like this:
The values of y are the following:
1.0000 1.6000 2
2.8000 3.4000 4
2.0000 3.2000 4
5.6000 6.8000 8
1.0000 4.0960 11
21.9520 39.3040 64
Can someone help me with this? Thank you very much!
댓글 수: 1
Stephen23
2021년 9월 17일
Removing all of the superfluous and confusing square brackets and complex conjugate tranposes makes your code simpler:
x = 1:0.6:4;
k = pi;
y = [x; x.*k; x.^3];
fprintf('%.4f %.4f %.0f\n',y);
If you want to write better code the solution is to get rid of pointless tranposes and the like, not keep on adding more on top.
채택된 답변
Image Analyst
2021년 9월 16일
편집: Image Analyst
2021년 9월 16일
Use commas instead of semicolons:
x = [1:0.6:4]
k = str2double (input ('Enter a value k: ','s'));
y = [x',(x.*k)',(x.^3)']
disp ('The values of y are the following:');
y2 = [x.*k]'
y3 = [x.^3]'
fprintf ('%7.4f %7.4f %7.0f\n',[x',y2,y3]');
댓글 수: 3
Image Analyst
2021년 9월 16일
I forgot to transpose it in the fprintf(). Try this:
x = [1:0.6:4]
k = str2double (input ('Enter a value k: ','s'));
% y = [x',(x.*k)',(x.^3)']
disp ('The values of y are the following:');
y2 = [x.*k]'
y3 = [x.^3]'
fprintf ('%7.4f %7.4f %7.0f\n',[x',y2,y3]');
Enter 2 and you'll see:
1.0000 2.0000 1
1.6000 3.2000 4
2.2000 4.4000 11
2.8000 5.6000 22
3.4000 6.8000 39
4.0000 8.0000 64
>>
추가 답변 (1개)
Rik
2021년 9월 16일
fprintf tranverses the input in a column-major order. If you want to change that, you can't, so you will have to flip the array itself:
x = [1:0.6:4];
k=2;%k = str2double (input ('Enter a value k: ','s'));
y = [x',(x.*k)',(x.^3)']
%fprintf ('%7.4f %7.4f %7.0f\n',y.');
% ^^
fprintf ('%7.4f %7.4f %7.0f\n',y.');
참고 항목
카테고리
Help Center 및 File Exchange에서 Argument Definitions에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!