基于多列创建一列 - 在 R 中

Question

I am familiar with statistical packages including R but I kind of stopped working in R in between and recently started using it again.

I have simple questions and any help would be greatly appreciated it.

My question is: I want to create a variable by fulfilling in a condition based on multiple columns/variables. For instance, a new variable to code as "1" if there is no missing values in any one of the columns from 1 to 100 and to code as 0 if otherwise.

How could I possibly solve this in R or possible code suggestions?

Many thanks in advance.

Kind regards, Mahesh

Answer 1

我们也可以在没有ifelse情况下做到这ifelse

df$new.column <- with(df, +(is.na(a) & is.na(b)))

Answer 2

This is an example.

df <- data.frame(a = c(1, 2, 3, 4, 5, NA, NA), b=c(6, 7, 8, NA, 9, 10, NA))
df$new.column <- ifelse(is.na(df$a) & is.na(df$b), 1, 0)
df

HTH!