merge 合并问题

代码语言：javascript复制

title: "merge 合并"
output: html_document
date: "2024-03-08"

R Markdown

代码语言：javascript复制

suppressMessages(library(TCGAbiolinks))
suppressMessages(library(SummarizedExperiment))

X1 <- assay(met)[1:3,1:3]
X1

代码语言：javascript复制

##            TCGA-EP-A2KC-01A-11D-A20Z-05 TCGA-ES-A2HS-01A-11D-A17Z-05
## cg16619049                    0.7796626                    0.4656080
## cg18147296                    0.8179045                    0.7744908
## cg13938959                    0.6397997                    0.9317492
##            TCGA-ES-A2HS-11A-11D-A17Z-05
## cg16619049                    0.5465106
## cg18147296                    0.8456720
## cg13938959                    0.8302542

代码语言：javascript复制

X2 <- assay(met)[2:4,4:6]
X2

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##            TCGA-CC-5259-01A-31D-A20Z-05 TCGA-ED-A97K-01A-21D-A383-05
## cg18147296                    0.7253149                    0.8047118
## cg13938959                    0.4120948                    0.7887094
## cg12445832                    0.1848328                    0.7557783
##            TCGA-DD-A3A1-01A-11D-A20Z-05
## cg18147296                    0.8544879
## cg13938959                    0.8174317
## cg12445832                    0.1738895

代码语言：javascript复制

ya <- merge(X1,X2,by="row.names")
ya#会发现合并之后多了一个row.names行名，怎么把他删除掉呢？

代码语言：javascript复制

##    Row.names TCGA-EP-A2KC-01A-11D-A20Z-05 TCGA-ES-A2HS-01A-11D-A17Z-05
## 1 cg13938959                    0.6397997                    0.9317492
## 2 cg18147296                    0.8179045                    0.7744908
##   TCGA-ES-A2HS-11A-11D-A17Z-05 TCGA-CC-5259-01A-31D-A20Z-05
## 1                    0.8302542                    0.4120948
## 2                    0.8456720                    0.7253149
##   TCGA-ED-A97K-01A-21D-A383-05 TCGA-DD-A3A1-01A-11D-A20Z-05
## 1                    0.7887094                    0.8174317
## 2                    0.8047118                    0.8544879

代码语言：javascript复制

#我的笨方法
gg <- colnames(ya)#对行名进行赋值
gg1 <- gg[-1]#删掉第一个row.names

rownames(ya) <- NULL
rownames(ya) <- ya[,1]
ya<- ya[-1]
colnames(ya) <- gg1#再次赋值行名
ya

代码语言：javascript复制

##            TCGA-EP-A2KC-01A-11D-A20Z-05 TCGA-ES-A2HS-01A-11D-A17Z-05
## cg13938959                    0.6397997                    0.9317492
## cg18147296                    0.8179045                    0.7744908
##            TCGA-ES-A2HS-11A-11D-A17Z-05 TCGA-CC-5259-01A-31D-A20Z-05
## cg13938959                    0.8302542                    0.4120948
## cg18147296                    0.8456720                    0.7253149
##            TCGA-ED-A97K-01A-21D-A383-05 TCGA-DD-A3A1-01A-11D-A20Z-05
## cg13938959                    0.7887094                    0.8174317
## cg18147296                    0.8047118                    0.8544879

代码语言：javascript复制

#小洁老师教的方法
ya <- merge(X1,X2,by="row.names")
tibble::column_to_rownames(ya, var = "Row.names")

代码语言：javascript复制

##            TCGA-EP-A2KC-01A-11D-A20Z-05 TCGA-ES-A2HS-01A-11D-A17Z-05
## cg13938959                    0.6397997                    0.9317492
## cg18147296                    0.8179045                    0.7744908
##            TCGA-ES-A2HS-11A-11D-A17Z-05 TCGA-CC-5259-01A-31D-A20Z-05
## cg13938959                    0.8302542                    0.4120948
## cg18147296                    0.8456720                    0.7253149
##            TCGA-ED-A97K-01A-21D-A383-05 TCGA-DD-A3A1-01A-11D-A20Z-05
## cg13938959                    0.7887094                    0.8174317
## cg18147296                    0.8047118                    0.8544879

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