Extended Data Fig. 1: FM Index Mapping.
From: Targeted nanopore sequencing by real-time mapping of raw electrical signal with UNCALLED

(top) FM index alignment of a standard DNA sequence, where the size of each box represents the number of possible locations. (middle) FM alignment of a sequence where every position could be one of two bases. Base ambiguity is analogous to the k-mers we consider for every event. (bottom) Same as middle but alignments starting from all positions are found by filling in the gaps between ranges from previous alignments.