How can I use fprintf to print matrix by column?
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Niel Tran
il 16 Set 2021
Commentato: Stephen23
il 17 Set 2021
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!
1 Commento
Stephen23
il 17 Set 2021
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.
Risposta accettata
Image Analyst
il 16 Set 2021
Modificato: Image Analyst
il 16 Set 2021
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]');
3 Commenti
Image Analyst
il 16 Set 2021
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
>>
Più risposte (1)
Rik
il 16 Set 2021
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.');
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