R:为dataframe中的字符行赋值

# 创建一个示例DataFrame
df <- data.frame(
  Name = c("Alice", "Bob", "Charlie"),
  Age = c(25, 30, 35),
  City = c("New York", "London", "Tokyo"),
  stringsAsFactors = FALSE
)

# 打印原始的DataFrame
print(df)

# 选择要赋值的行，并将新的字符行赋值给它
df[2, ] <- c("David", 32, "Paris")

# 打印更新后的DataFrame
print(df)

     Name Age     City
1   Alice  25 New York
2     Bob  30   London
3 Charlie  35    Tokyo

     Name Age     City
1   Alice  25 New York
2   David  32    Paris
3 Charlie  35    Tokyo