Split large poly(A) data file into smaller parts.

Divides a poly(A) length table (nanopolish or tailfindr output) into smaller files of at most part_size rows each, saving them to a polya_data_parts subdirectory within save_dir. This prevents memory overflow when processing large datasets.

Usage

split_polya_data(polya_data, part_size = 100000, save_dir)

Arguments

polya_data

Character string or data frame. Full path of the poly(A) length file (.tsv), or an in-memory data frame.

part_size

Numeric [100000]. Maximum number of rows per output part file.

save_dir

Character string. Full path of the directory where the polya_data_parts subdirectory will be created.

Value

Character vector of file paths to the created part files, named polya_data_part_<i>_of_<n>.tsv.

Details

This function is called internally by check_tails_guppy when the input exceeds the part_size threshold. It is not intended to be called directly by the user.

See also

check_tails_guppy which calls this function, process_polya_parts which processes the resulting parts.