我正在尝试通过确定是否应该用0替换NA,或者如果将NA替换为NA来清理数据集.
以下是示例数据集.'Dom.Supply'应等于剩余因子的总和.例如,'Feed','Waste','Processing'和'Other.Uses'在行3:5中出现的NA可以用0替换为具有值的因子之和(即'Food'和'种子')等于'Dom.Supply的值.但是,在第1行和第2行中,NAs必须保持为'Food'和'Seed'不等于'Dom.Supply'的总和.
Region Country Group Item Year Production Imports Stock.Var Exports Dom.Supply Feed Seed Waste Processing Other.Uses Food
NAm.Oceania Australia Cereals Rye 1961 11 0 0 2 9 NA 1 NA NA NA 7
NAm.Oceania Australia Cereals Rye 1962 10 0 0 3 7 NA 1 NA NA NA 5
NAm.Oceania Australia Cereals Rye 1963 10 0 0 1 9 NA 2 NA NA NA 7
NAm.Oceania Australia Cereals Rye 1964 14 0 -5 0 9 NA 2 NA …