Fig. 9
From: srnaMapper: an optimal mapping tool for sRNA-Seq reads
A toy example of a fastq file (left), with 6 reads, and its representation as a tree (right). The read CGA is seen once, with quality HHI. The corresponding label in the reads tree is thus 1, HHI. The read GC is seen twice, with qualities HI and IH. The base-wise maximum of the qualities is kept: II, since I (quality 40) > H (quality 39). The read names are also stored in an external data structure