为什么会报错说参数值意味着不同的行数
这是代码:
```r
# 创建数据框
rocket_data <- data.frame(
Fuel = rep(c("A1", "A2", "A3","A4"), each = 8),
Propulsion = rep(c("B1", "B2", "B3"), times = 6),
Range = c(58.2, 56.2, 65.3, 52.6, 41.2, 60.8,
49.1, 54.1, 51.6, 42.8, 50.5, 48.4,
60.1, 70.9, 39.2, 58.3, 73.2, 40.7,
75.8, 58.2, 48.7, 71.5, 51.0, 41.4)
)
# 查看数据
print(rocket_data)
这是原数据
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/871a97cd6fec4041a625e92721a3d5b8.png "#left")