获取不包含列的给定值的子集 [英] Get a subset not containing a given value of the column

问题描述

我有一个名为 data 的表:

I have a table called data:

A 22
B 333
C Not Av.
D Not Av.

我怎样才能得到一个子集，其中包含Not Av."的所有行.被排除在外?值得一提的是，我有要检查的列的索引(在本例中为 colnum = 2)，但我没有它的名称.

How can I get a subset, from which all rows containing "Not Av." are excluded? It is important to mention that I have the index of a column to be checked (in this case colnum = 2), but I don't have its name.

我试过了，但它不起作用:

I tried this, but it does not work:

data<-subset(data,colnum!="Not Available")

推荐答案

df <- read.csv(text="A,22
B,333
C,Not Av.
D,Not Av.", header=F)

df[df[,2] != "Not Av.",]

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