在Vector上使用If else条件 [英] Using If else conditions on Vectors

问题描述

我对以下逻辑有疑问.基本上，我有MS和Apple的股票数据框架.我想基于某些价格比较来执行买卖条件.但是R不允许我对向量使用If-Else条件，我该如何克服这种情况

I am having issues with the following piece of logic. Basically, i have a data frame of stocks for MS and Apple. I want to execute buy and sell conditions based on certain price comparisons. But R does not allow me to use If-Else conditions with vectors how do I overcome this scenario

if (mydatastocks$MS<120){
  if (mydatastocks$MS>110 & mydatastocks$MS<120){
    print("buy small")
  }else{
    print("Buy Huge")
  }
} else{
      if(mydatastocks$MS>120)
      print("Ignore")
}

推荐答案

将顺序分配给数据框中的另一列可能最有意义:

It might make the most sense to assign the order to another column in your data frame:

mydatastocks$order <- ifelse(mydatastocks$MS > 110 & mydatastocks$MS < 120,
                             "buy small",
                             ifelse(mydatastocks$MS <= 120, "buy huge", "ignore"))

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