r - 需要找到关于回归模型的关系，但忽略 R 中的一些点

Question

我有

count2 <- length(which(apple==2))

count2

relation <- lm(random~fruit+food)

print(relation)

summary(relation)

我试图找到和之间的关系，fruit但只有当苹果等于两个时。我如何将我的想法与foodrandomcount2lm(random~fruit+food)

标签： r

Answer 1

这是你需要的吗？

dataset<-data.frame(apple = sample(seq(1,5,1),50,replace = TRUE),
                    random = rnorm(50,0,1),
                    food = rnorm(50,0,1))

subset_data <-subset(dataset, apple == 2, select = c(apple, random,food))


relation <- lm(random~fruit+food,data=subset_data)

print(relation)

summary(relation)