[enter image description here][1]
$ latitude : Factor w/ 2 levels "43.0678901152949",..: 1 1 1
$ longitude: Factor w/ 2 levels "-76.1734713936105",..: 1 1 1
current data type is factor, but I want to change them to Numeric, so I use
no3$latitude <- as.numeric(no3$latitude)
no3$longitude <- as.numeric(no3$longitude)
1。我在r中使用“ as.numeric”来更改数据类型,但这不起作用
it becomes to
[enter image description here][2]
$ latitude : num 1 1 1 1 1 1 1 1 1 1 ...
$ longitude: num 1 1 1 1 1 1 1 1 1 1 ...
[1]: https://i.stack.imgur.com/HMj9C.png
[2]: https://i.stack.imgur.com/egcsx.png
答案 0 :(得分:2)
有时在类强制链中引入as.character()
似乎可以纠正此类问题。我认为您的代码之所以会显示这种行为,是因为在底层(模态下),因子向量是从1到n的数字向量,其中n是级别数。
> x <- as.factor("43.0678901152949")
> as.numeric(x)
[1] 1
> x <- as.character(as.factor("43.0678901152949"))
> as.numeric(x)
[1] 43.06789