在 matlab 函数中处理 NaN [英] Dealing with NaN's in matlab functions

问题描述

我想知道 matlab 是否有一种内置的方法来处理函数调用中的 NaN.更具体地说，我试图取其中包含 NaN 的向量的平均值.例如，在 R

I was wondering if matlab has a built in way to deal with NaN's in function calls. More specifically, I am trying to take the mean of a vector that has a NaN in it. For example, in R

> x = c(1,2,3,4,NA)
> mean(x)
[1] NA
> mean(x,na.rm=TRUE)
[1] 2.5

在 Matlab 中，在一行中是否有类似的东西(我不想编写自己的函数，也不必在计算平均值之前循环查找 NaN ).

Is there something comprable to this in Matlab that is in one line (I don't want to write my own function nor have to loop to find NaN's before calculating the mean).

此外，我无权访问统计工具箱，因此我无法使用诸如 nanmean() 之类的东西.

Also, I do not have access to the statistics toolbox so I can't use something like nanmean().

推荐答案

您可以执行类似 mean(x(~isnan(x))) 的操作.如果你愿意，你也可以写一堆这样的包装器并将它们放在你的 startup.m 文件中.

You could do something like mean(x(~isnan(x))). If you want you could also write a bunch of wrappers like this and put them in your startup.m file.

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