Given a list 'x' of R objects from the same class and same format, unlist simplifies it to produce a new R object which contains all the initial components which in 'x' object.
unlist(x, recursive = TRUE, use.names = TRUE)Any list R object.
Logical. Should unlisting be applied to list components of x?
Logical. Should names be preserved?
This is a method to extend unlist generic function to handle any list of objects from the same class.
gr1 <-GRanges(seqnames = 'chr2', ranges = IRanges(3, 6), strand = '+',
score = 5L, GC = 0.45)
gr2 <- GRanges(seqnames = c('chr1', 'chr1'), ranges = IRanges(c(7,13),
width = 3), strand = c('+', '-'), score = 3:4, GC = c(0.3, 0.5))
gr3 <- GRanges(seqnames = c('chr1', 'chr2'),
ranges = IRanges(c(1, 4), c(3, 9)), strand = c('-', '-'),
score = c(6L, 2L), GC = c(0.4, 0.1))
grl <- list('gr1' = gr1, 'gr2' = gr2, 'gr3' = gr3)
base::unlist(grl) # The default unlist does not work
#> $gr1
#> GRanges object with 1 range and 2 metadata columns:
#> seqnames ranges strand | score GC
#> <Rle> <IRanges> <Rle> | <integer> <numeric>
#> [1] chr2 3-6 + | 5 0.45
#> -------
#> seqinfo: 1 sequence from an unspecified genome; no seqlengths
#>
#> $gr2
#> GRanges object with 2 ranges and 2 metadata columns:
#> seqnames ranges strand | score GC
#> <Rle> <IRanges> <Rle> | <integer> <numeric>
#> [1] chr1 7-9 + | 3 0.3
#> [2] chr1 13-15 - | 4 0.5
#> -------
#> seqinfo: 1 sequence from an unspecified genome; no seqlengths
#>
#> $gr3
#> GRanges object with 2 ranges and 2 metadata columns:
#> seqnames ranges strand | score GC
#> <Rle> <IRanges> <Rle> | <integer> <numeric>
#> [1] chr1 1-3 - | 6 0.4
#> [2] chr2 4-9 - | 2 0.1
#> -------
#> seqinfo: 2 sequences from an unspecified genome; no seqlengths
#>
unlist(grl)
#> GRanges object with 5 ranges and 2 metadata columns:
#> seqnames ranges strand | score GC
#> <Rle> <IRanges> <Rle> | <integer> <numeric>
#> [1] chr2 3-6 + | 5 0.45
#> [2] chr1 7-9 + | 3 0.30
#> [3] chr1 13-15 - | 4 0.50
#> [4] chr1 1-3 - | 6 0.40
#> [5] chr2 4-9 - | 2 0.10
#> -------
#> seqinfo: 2 sequences from an unspecified genome; no seqlengths