How do I get MatLab to format to three (3) deceimal places?

Question

Eric Metzger 2020-2-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/504079-how-do-i-get-matlab-to-format-to-three-3-deceimal-places

评论： Star Strider 2020-2-6

This may sound like a silly question but I need to get MatLab to format real number output to three (3) decimal places. I know format bank will do two (2) decimal places and the format short G or format shortg will do decimal places to five (5) deceimal places but I only need three (3). Is there a way to get MatLab to do that?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2020-2-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/504079-how-do-i-get-matlab-to-format-to-three-3-deceimal-places#answer_414157

The round function has several options, however using it will change how the numbers are represented internally, not only how they are displayed.

It might be most appropriate to usse sprintf with the '%.3f' format descriptor to do what you want.

2 个评论
显示无隐藏无

Eric Metzger 2020-2-6

Been using the round option but sometimes it woudl force a whole number as round deals primarily with integers. However, noticed where that was happeneing, I was missing a ")" or a "," in the line.

I also force alot of my output into a .txt files using the fprintf function, then reload as needed later. This forces MatLab to use the numbers in the format it is given. I also do this to create a record of what was produced (helps a lot with debugging). Just wish it didn't slow down the script the way it does.

Thanks for your input, will use it in the areas where the information generated is not output first. Looks like this came down to syntax again.