GENOME <- "galGal2"
ORGANISM <- "Gallus gallus"
ASSEMBLED_MOLECULES <- paste0("chr",
c(1:24, 26:28, 32, "W", "Z",
"E26C13", "E50C23", "E22C19W28", "E64",
"M"))
CIRC_SEQS <- "chrM"
.order_seqlevels <- function(seqlevels)
{
random <- paste0("chr", c(1:8, 10:11, 13, 16, 24, 27:28, 32, "W", "Z"),
"_random")
ordered_seqlevels <- c(ASSEMBLED_MOLECULES, random, "chrUn")
stopifnot(length(seqlevels) == length(ordered_seqlevels))
idx <- match(ordered_seqlevels, seqlevels)
stopifnot(!anyNA(idx))
idx
}
FETCH_ORDERED_CHROM_SIZES <-
function(goldenPath.url=getOption("UCSC.goldenPath.url"))
{
chrom_sizes <- GenomeInfoDb:::fetch_chrom_sizes_from_UCSC(GENOME,
goldenPath.url=goldenPath.url)
oo <- .order_seqlevels(chrom_sizes[ , "chrom"])
S4Vectors:::extract_data_frame_rows(chrom_sizes, oo)
}
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