R语言删除数据

# 创建一个数据框
data <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Eve")
)

# 删除指定行
data <- data[-c(2, 4), ]

print(data)

  ID   Name
1  1  Alice
3  3 Charlie
5  5    Eve

# 创建一个数据框
data <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Eve")
)

# 删除Name为Bob和David的行
data <- subset(data, Name != "Bob" & Name != "David")

print(data)

  ID   Name
1  1  Alice
3  3 Charlie
5  5    Eve

# 创建一个数据框
data <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Eve"),
  Age = c(20, 30, 25, 35, 28)
)

# 删除Age列
data$Age <- NULL

print(data)

  ID   Name
1  1  Alice
2  2    Bob
3  3 Charlie
4  4  David
5  5    Eve

# 创建一个数据框
data <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Eve"),
  Age = c(20, 30, 25, 35, 28)
)

# 删除Name列
data <- select(data, -Name)

print(data)

  ID Age
1  1  20
2  2  30
3  3  25
4  4  35
5  5  28

# 创建一个数据框
data <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Eve"),
  Age = c(20, 30, 25, 35, 28)
)

# 删除Age大于30的数据
data <- subset(data, Age <= 30)

print(data)

  ID   Name Age
1  1  Alice  20
3  3 Charlie  25
5  5    Eve  28