Strip leading @ from character vector — strip_leading

This function removes a single leading @ character from each element of a character vector when present. This is intended to deal with SAMtools > FASTQ translation often prefixing read IDs with an "@", which can result in read ID mismatches and metadata merging fails.

Usage

strip_leading_at(string)

Arguments

string: character vector. A vector (e.g. read IDs) to strip of a single leading "@" each wherever one is present.

Value

character vector. The same string but with one "@" removed from each element that started with one.

Examples

strip_leading_at(c("read_1", "@read_2", "@@read_3", "", NA, NULL))
#> [1] "read_1"  "read_2"  "@read_3" ""        NA