Bacterial reads, variability of accuracy when identifying a genome.

<p>Average rank (, x-axis) and standard deviation of the rank (, y-axis) of the correct reference when performing the identification procedure for 747 test bacterial genomes, using 100 random reads and 3 times for each genome. The closest the average rank is to 1 the closest to a perfect performance, and the smallest the standard deviation of the ranks the least sensitive to sampling effects. In order to increase clarity when many bacterial genomes tested produce equal or close coordinates on the scatter, we use hexagonal binning and color the areas accordingly. The vertical bar on the right side of panel indicates the percentage of times the correct reference was within the top 25 matches. Various reads size (rows) and error rates (random substitution, columns) were tried, producing a matrix of scatter plots.