我试着用细胞带来分类染色体畸变。

Question

我有以下data.frame“测试”：

Cytoband
9p 
1q
10p
22p
2q

我想要得到：

Cytoband
1q
2q
9p
10p
22p

这是我的代码：

indices <- order(test$Cytoband, decreasing = FALSE)
test <- test[indices,]

但我明白：

10p
1q
22p
2q
9p

有简单的修改吗？谢谢!

Answer 1

您也可以尝试使用mixedsort或mixedorder

library(gtools)
out = data.frame(Cytoband = mixedsort(dat$Cytoband))

#> out
#  Cytoband
#1       1q
#2       2q
#3       9p
#4      10p
#5      22p

使用mixedorder

dat[mixedorder(as.character(dat$Cytoband)),]

Answer 2

x = c("9p","1q","10p","22p","2q")

y = x[order(as.numeric(gsub("\\D","",x)))]
y

[1] "1q"  "2q"  "9p"  "10p" "22p"

Answer 3

test[order(as.numeric(gsub('(\\d+)[a-z]*', '\\1', test[,1]))),, drop=F]
  Cytoband
2       1q
5       2q
1       9p
3      10p
4      22p