无法在R中将字符转换为数字 [英] Can't convert character to numeric in R

问题描述

我正在尝试将值从字符转换为数字，但是R引入了NA。我已经检查了一个有问题的值：

I'm trying to convert values from character to numeric, but R introduces NAs. I have examined one of the problematic values:

> x
[1] "11 914 711.5"
> length(x)
[1] 1
> typeof(x)
[1] "character"
> as.numeric(x)
[1] NA
Warning message:
NAs introduced by coercion 

有人知道如何解决此问题吗？

Does anybody have any idea how to fix this?

推荐答案

您可以先拆分字符串，然后将其转换为数字：

You could first split your string and then convert them to numeric:

as.numeric(unlist(strsplit(x, ' ')))
[1]  11.0 914.0 711.5

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