对于我的数据集的每一行，我都有多个字符串变量。
例如
var1 var1 var3 var4
1 mother daughter house tea
2 mother father daughter NA
3 house tea pencil paper
我想创建一个新变量（新），如果该行中存在以下单词之一：
母亲，父亲，女儿是这样的：
var1 var1 var3 var4 new
1 mother daughter house tea 1
2 mother father daughter NA 1
3 house tea pencil paper 0
有办法吗？不幸的是，我什至不知道从哪里开始。
是的，有办法。这是一个
our_strings <- c("mother", "daughter", "father")
df$new <- as.integer(apply(df, 1, function(x) any(x %in% our_strings)))
df
# V1 var1 var2 var3 var4 new
# 1 1 mother daughter house tea 1
# 2 2 mother father daughter <NA> 1
# 3 3 house tea pencil paper 0
可复制的数据：
df <- data.frame(
V1 = 1:3,
var1 = c("mother", "mother", "house"),
var2 = c("daughter", "father", "tea"),
var3 = c("house", "daughter","pencil"),
var4 = c("tea", NA, "paper")
)
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我来说两句