值与 R 中的级别不匹配

Question

给定数据框的几列是因子级向量，以其中之一为例：

[4661] 12.7          13.2          10.1          12.3         
[4665] Not Available 12.7          Not Available Not Available
[4669] Not Available Not Available Not Available 11.1         
[4673] 9.9           9             Not Available 9.7          
[4677] 8.9           10.1          11.7          13           
[4681] Not Available 11.5          Not Available Not Available
[4685] 12.3          11.2          Not Available 11.1         
[4689] 10.4          Not Available Not Available Not Available
[4693] 11.5          Not Available Not Available Not Available
[4697] Not Available Not Available 12            Not Available
[4701] Not Available Not Available Not Available Not Available
[4705] Not Available Not Available
106 Levels: 10 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 ... Not Available

我觉得很烦，一直说106级是从10开始，然后是10.1，但实际上10以下的值很多，如上表所示。

如何解决此问题，并让级别自动匹配所有值？谢谢。

Answer 1

您可以通过重新factor-ing

将顺序更改为数字顺序

x <- factor(c(10,10.1,10.2,9,8,1,"Not available"))
levels(x)
#[1] "1"             "10"            "10.1"          "10.2"         
#[5] "8"             "9"             "Not available"


factor(x, levels=levels(x)[order(as.numeric(as.character(levels(x))),na.last=TRUE)])
#[1] 10            10.1          10.2          9             8             1             Not available
#Levels: 1 8 9 10 10.1 10.2 Not available

可以说，您应该首先将此数据用作数字，例如：

as.numeric(as.character(x))
#[1] 10.0 10.1 10.2  9.0  8.0  1.0   NA

值与 R 中的级别不匹配

values don't match level in R

r

dataframe

r-factor