r - 按行名合并或组合

Question

在下面的示例中，我有两个数据集(Z 和 A)。我想通过 ILMN 编号合并或组合这些集合。如果没有匹配，则填写NA。

z <- matrix(c(0,0,1,1,0,0,1,1,0,0,0,0,1,0,1,1,0,1,1,1,1,0,0,0,"RND1","WDR", "PLAC8","TYBSA","GRA","TAF"), nrow=6,
    dimnames=list(c("ILMN_1651838","ILMN_1652371","ILMN_1652464","ILMN_1652952","ILMN_1653026","ILMN_1653103"),c("A","B","C","D","symbol")))

t<-matrix(c("GO:0002009", 8, 342, 1, 0.07, 0.679, 0, 0, 1, 0, 
        "GO:0030334", 6, 343, 1, 0.07, 0.065, 0, 0, 1, 0,
        "GO:0015674", 7, 350, 1, 0.07, 0.065, 1, 0, 0, 0), nrow=10, dimnames= list(c("GO.ID","LEVEL","Annotated","Significant","Expected","resultFisher","ILMN_1652464","ILMN_1651838","ILMN_1711311","ILMN_1653026")))

结果将是这样的:

             [,1]         [,2]         [,3]         [,4]
GO.ID        "GO:0002009" "GO:0030334" "GO:0015674"  NA
LEVEL        "8"          "6"          "7"           NA
Annotated    "342"        "343"        "350"         NA
Significant  "1"          "1"          "1"           NA
Expected     "0.07"       "0.07"       "0.07"        NA
resultFisher "0.679"      "0.065"      "0.065"       NA
ILMN_1652464 "0"          "0"          "1"           PLAC8
ILMN_1651838 "0"          "0"          "0"           RND1
ILMN_1711311 "1"          "1"          "0"           NA
ILMN_1653026 "0"          "0"          "0"           GRA

Answer 1

使用合并并将 t 向量重命名为 tt (请参阅 Andrie 的 PS):

merge(tt,z,by="row.names",all.x=TRUE)[,-(5:8)]

现在，如果您使用数据框而不是矩阵，这甚至会变得容易得多:

z <- as.data.frame(z)
tt <- as.data.frame(tt)
merge(tt,z["symbol"],by="row.names",all.x=TRUE)