#fastq #sequencing #bioinformatics #illumina #champ

illumina_coordinates

Parses Illumina sequence identifiers found in FASTQ files

2 releases

Uses old Rust 2015

0.9.1 Aug 19, 2018
0.9.0 Apr 26, 2018

#32 in #sequencing

MIT license

12KB
132 lines

illumina_coordinates

Build Status

In FASTQ files created by the Illumina sequencing process, the sequence identifiers contain the coordinates of the DNA cluster that produced the sequence (among other things). This library parses the identifiers.

Usage

extern crate illumina_coordinates;

fn main() {
    let line = "@M03745:11:000000000-B54L5:1:2108:4127:8949";
    let seq_id = illumina_coordinates::parse_sequence_identifier(&line).unwrap();
    assert_eq!(seq_id.sequencer_id, "M03745".to_string());
    assert_eq!(seq_id.run_count, 11);
    assert_eq!(seq_id.flow_cell_id, "000000000-B54L5".to_string());
    assert_eq!(seq_id.lane, 1);
    assert_eq!(seq_id.side, 2);
    assert_eq!(seq_id.swath, 1);
    assert_eq!(seq_id.tile, 8);
    assert_eq!(seq_id.x, 4127);
    assert_eq!(seq_id.y, 8949);
}

Description of Fields

Take this example sequence identifier:

@M03745:11:000000000-B54L5:1:2108:4127:8949

Value Meaning
M03745 ID of the sequencing machine
11 run count for this machine
000000000-B54L5 ID of the flow cell. "B54L5" will be printed on the flow cell in this example
1 lane number. For MiSeqs, there's only one lane
2 from 2108 the side of the chip
1 from 2108 the swath (for MiSeqs, this is always 1. For HiSeqs, each lane is two tiles wide, and the first pass from left-to-right is swath one, then the returning pass on the other side of the lane is swath two
08 from 2108 the tile number. For MiSeqs, this is a number from 1 to 19
4127 the x-position of the read in the tile, in arbitrary units
8949 the y-position of the read in the tile, in arbitrary units

See https://help.basespace.illumina.com/articles/descriptive/fastq-files/ for more information.

No runtime deps