Could anyone tell me why NaN is being present instead of numbers.

2 次查看（过去 30 天）

显示更早的评论

Prabha Kumaresan 2018-2-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380769-could-anyone-tell-me-why-nan-is-being-present-instead-of-numbers

评论： Jan 2018-2-5

采纳的回答： Birdman

Could anyone tell me why NaN is being present instead of numbers.

采纳的回答

Birdman 2018-2-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380769-could-anyone-tell-me-why-nan-is-being-present-instead-of-numbers#answer_303469

编辑：Birdman 2018-2-5

Read the following blog. It is helpful:

https://blogs.mathworks.com/loren/2006/07/05/when-is-a-numeric-result-not-a-number/

3 个评论
显示 1更早的评论隐藏 1更早的评论

Birdman 2018-2-5

编辑：Birdman 2018-2-5

I can if you share your code. You may use isnan.

https://www.mathworks.com/help/matlab/ref/isnan.html

Jan 2018-2-5

@Prabha: To avoid the creation of NaN value, you have to avoid to perform calculations, which have NaN as result. There is no general way to "avoid" them, because they are the mathematically correct result for certain operations.

You get e.g. NaN for the numerical value of an imported Excel file, if the corresponding cell contains a string. Or you get NaN, if you divide by 0. If you need a method to catch this, post the relevant part of your code, as usual.

请先登录，再进行评论。