ExtractRegions #
Extract from multiple fixed position regions.
[[step]]
action = "ExtractRegions"
regions = [
{segment = "read1", start = 0, length = 8},
{segment = "read1", start = 12, length = 4},
]
label = "barcode"
region_separator = "_" # (optional) str, what to put between regions, defaults to '_'
This transformation extracts multiple fixed-length regions from reads and concatenates them into a single tag, separated by the specified separator.