Is it possible to use format long in one line of code and then use format short in another line of code on the same script?

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Michael
Michael on 22 Mar 2024
Commented: Stephen23 on 22 Mar 2024
Bascially I am required to write pi in long format in the beginning of my script but later on I need to write values like 1.1 or 1.3, and I would like to do this part in short format. Is there any way to achve this?
  2 Comments
Stephen23
Stephen23 on 22 Mar 2024
"Is there any way to achve this? "
Sure, as other have shown you can fiddle around with the FORMAT. But a cleaner and more generalized approach would be to forget about the command windows settings: just use FPRINTF and specify the format explicitly.

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Answers (2)

Manikanta Aditya
Manikanta Aditya on 22 Mar 2024
Ran in:
% Long format for pi
format long
pi_long = pi
pi_long =
3.141592653589793
disp(['Long format: ', num2str(pi_long)])
Long format: 3.1416
% Short format for other values
format short
val_short = 1.1
val_short = 1.1000
disp(['Short format: ', num2str(val_short)])
Short format: 1.1
Thanks
  2 Comments
Manikanta Aditya
Manikanta Aditya on 22 Mar 2024
I thought when combined with num2str() might do the job but looks like as it converts the number into a string using the current format which might not reflect the long or short format I've set. Thanks for bringing it up.

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Image Analyst
Image Analyst on 22 Mar 2024
Ran in:
Just call format whenever you want to set the format and it will be that format for the rest of the script (or until you call format again)
format short g
pi
ans =
3.1416
format long g
pi
ans =
3.14159265358979
format short g
1.1
ans =
1.1
1.3
ans =
1.3
format long g
1.1
ans =
1.1
1.3
ans =
1.3
% Use sprintf to display with specified field width, for example 5, 3, or 23:
fprintf('%.5f', pi)
3.14159
fprintf('%.3f', 1.1)
1.100
fprintf('%.23f', 1.3)
1.30000000000000004440892
Note: format does not have any effect on fprintf. The number of decimal places shown when you use fprintf is the number after the percent symbol and dot.

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