r - 否则如果语句

Question

我在 R 中运行以下命令：

if (mito$count > 1) {
mito$Polymorphism  <- "SNP"
} else if ((mito$count == 1) & (mito$A_GT == mito$ref | mito$C_GT == mito$ref | mito$G_GT == mito$ref | mito$T_GT == mito$ref)) {
mito$Polymorphism  <- "No"
} else {
    mito$Polymorphism <- ""
}

它给了我每个人似乎都得到的常见错误：

1: In if (mito$count > 1) { :
the condition has length > 1 and only the first element will be used
2: In if ((mito$count == 1) & (mito$A_GT == mito$ref | mito$C_GT ==  :
the condition has length > 1 and only the first element will be used

我认为这与单值与向量有关（前者，我想做）。我需要事先指定数据框吗？

Answer 1

ifelse()在这种情况下工作：

mito$Polymorphism <- ifelse(mito$count > 1, 
                            'SNP', 
                            ifelse(((mito$count == 1) & 
                                    (mito$A_GT == mito$ref |
                                     mito$C_GT == mito$ref |
                                     mito$G_GT == mito$ref |
                                     mito$T_GT == mito$ref)),
                                   'NO',
                                   ''))