Keeping a zero after a decimal

Andre Dixon

2017 12 6

1 个回答

34 次查看（30 天）

0 个投票

Hi! I'm relatively new to MATLAB and am trying to round the values within this column vector to three significant digits. This has worked fine except for the second entry, which fails to keep a zero after the decimal point when rounded. If I have a vector: A = [27.372; 24.966; 28.908; 29.205; 23.783; 27.256], no matter whether I use: result = round(A, 3, 'significant') or result = round(A, 1), both produce the following: 27.4; 25; 28.9; 29.2; 23.8; 27.3. I would like the second row to be 25.0. Any help is much appreciated! Cheers :)

7 个评论
显示 5更早的评论隐藏 5更早的评论

Kurt 2023-2-13

编辑：Kurt 2023-2-13

在 MATLAB Online 中打开

A = [27.372; 24.966; 28.908; 29.205; 23.783; 27.256]
A = 6×1
3720
9660
9080
2050
7830
2560
display(sprintf('%0.1f\n',round(A,1)));
4
0
9
2
8
3

Stephen23 2023-2-14

在 MATLAB Online 中打开

@Kurt: SPRINTF() also performs rounding, so the separate ROUND() call is not required:

A = [27.372; 24.966; 28.908; 29.205; 23.783; 27.256];
fprintf('%0.1f\n',A)
4
0
9
2
8
3

请先登录，再进行评论。

请先登录，再回答此问题。

Follow Question

回答（1 个）

Christopher Coello 2018-2-7

编辑：Christopher Coello 2018-2-7

在 MATLAB Online 中打开

0 个投票

Well not sure about the question. But if what you want is display the vector with trailing zero then you can use the undocumented sprintfc command

A = [27.372; 24.966; 28.908; 29.205; 23.783; 27.256];
% with one decimal digit
sprintfc('%0.1f',A)
% with two decimal digits
sprintfc('%0.2f',A)
% with five decimal digits 
sprintfc('%0.5f',A)