This function attempts to find the mutated bases in each read.
fun_setting(pre, post, neighbor_seq, neighbor_length, alt_length)list(pre_search_length, post_search_length, peri_seq_1, peri_seq_2)
The 5' side bases of the sequence for searching.
The 3' side bases of the sequence for searching.
Short reference sequence around the mutation.
The length from the mutation to the ends of the short reference sequence.
The length of altered bases.