Figure 11.

Fraction of simulated reads with an average mapping error rate. Reads are binned by their mapping quality scores. There is a bin for each mapping quality score as reported by the read mapper, and bins are sorted based on their mapping quality scores in descending order. For each tool, the nth data point from the left side of the x-axis shows the rate of incorrectly mapped reads among the reads in the first n bins. We show the number of reads in these bins in terms of the fraction of the overall number of reads in the dataset. The data point with the largest fraction shows the average mapping error rate of all mapped reads.