is it possible to print 5decimal using disp commant

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mehmet salihi
mehmet salihi 2021-5-18
评论： Rik 2021-5-31
disp([x' u])
assume x and u are matrix
when i excute this, i get 0.9859.
i want to show with 5 decimal after point. 0.96875
  2 个评论
Mathieu NOE
Mathieu NOE 2021-5-18
hello
you can use sprintf
% Examples
% sprintf('%0.5g',(1+sqrt(5))/2) % 1.618
% sprintf('%0.5g',1/eps) % 4.5036e+15
% sprintf('%15.5f',1/eps) % 4503599627370496.00000
% sprintf('%d',round(pi)) % 3
Rik
Rik 2021-5-18
@Mathieu NOE feel free to move your comment to the answer section, as I would say this is the answer.
@mehmet salihi you can either look at sprintf and fprintf or control the display of values in general with the format function.

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采纳的回答

Image Analyst
Image Analyst 2021-5-19
I'd use fprintf(), not sprintf(). fprintf() prints directly to the command window while sprintf() sends the result to a string. If you didn't specify a string, it will add "ans = " to the result, or the string variable name if you specified one, and enclose the number in single quote marks.
Compare these 3 different ways of doing it:
val = 0.96875123456789
fprintf('%.5f\n', val); % Method 1 using fprintf
sprintf('%.5f', val) % Method 2 using sprintf without assigning it to anything.
str = sprintf('%.5f', val) % method 3 using sprintf and assigning it to a variable called "str".
Results in command window:
0.96875
ans =
'0.96875'
str =
'0.96875'
  2 个评论
mehmet salihi
mehmet salihi 2021-5-31
i have matrix, not only one variable, how can i apply it to my matrix elements.
and i use the command below.
y=2:-0.05:0;
Told is matrix
disp([y' Told(:,find(abs(x-0.0) < 0.001)) Told(:,find(abs(x-0.2) < 0.001))...
Told(:,find(abs(x-0.4) < 0.001)) Told(:,find(abs(x-0.6) < 0.001))...
Told(:,find(abs(x-0.8) < 0.001)) Told(:,find(abs(x-1.0) < 0.001))])
Rik
Rik 2021-5-31
Ran in:
Have you read the documentation for sprintf or fprintf?
Note that Matlab stores (and reads) arrays in column-major form, so you might need to transpose your matrix to get the expected result:
A=reshape(1:4,2,2);
disp(A)
1 3 2 4
fprintf('%d %d\n',A)
1 2 3 4
fprintf('%d %d\n',A.')
1 3 2 4

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