Creates list of tail chunks containing only A nucleotides.

Extracts overlapping fragments of poly(A) tail signals that do not contain non-A nucleotides and organises them in a nested list keyed by read ID.

Usage

create_tail_chunk_list_A(tail_feature_list, num_cores)

Arguments

tail_feature_list

List object produced by create_tail_feature_list_A.

num_cores

Numeric [1]. Number of physical cores to use. Do not exceed 1 less than the number of cores at your disposal.

Value

A named nested list organised by read IDs, where each element is a list of numeric vectors (each of length 100) representing the overlapping signal fragments.

Details

This training-set variant is designed for A-only reference data preparation. Unlike create_tail_chunk_list_trainingset (which centres chunks on modifications), this function uses split_with_overlaps with segment = 100 and overlap = 50, effectively performing data augmentation by producing overlapping windows across the entire tail signal.

See also

create_tail_feature_list_A for the preceding pipeline step, split_with_overlaps for the per-read segmentation logic, create_gaf_list_A for the next pipeline step, create_tail_chunk_list_trainingset for the non-A variant.

Examples

if (FALSE) { # \dontrun{

create_tail_chunk_list_A(
  tail_feature_list = tail_feature_list,
  num_cores = 2)

} # }