unlist2 {AnnotationDbi} | R Documentation

## A replacement for unlist() that does not mangle the names

### Description

`unlist2` is a replacement for `base::unlist()` that does not mangle the names.

### Usage

      unlist2(x, recursive=TRUE, use.names=TRUE, what.names="inherited")

### Arguments

`x, recursive, use.names` | See `?unlist`.
`what.names` | `"inherited"` or `"full"`.

### Details

Use this function if you don't like the mangled names returned by the standard `unlist` function from the base package. Using `unlist` with annotation data is dangerous and it is highly recommended to use `unlist2` instead.

### Author(s)

Herve Pages

### See Also

`unlist`

### Examples

      x <- list(A=c(b=-4, 2, b=7), B=3:-1, c(a=1, a=-2), C=list(c(2:-1, d=55), e=99))
      unlist(x)
      unlist2(x)

      library(hgu95av2.db)
      egids <- c("10", "100", "1000")
      egids2pbids <- mget(egids, revmap(hgu95av2ENTREZID))
      egids2pbids

      unlist(egids2pbids)   # 1001, 1002, 10001 and 10002 are not real
                            # Entrez ids but are the result of unlist()
                            # mangling the names!

      unlist2(egids2pbids)  # much cleaner! yes the names are not unique
                            # but at least they are correct...

[Package AnnotationDbi version 1.4.3 Index]