Additional file 4. Top 1 ranks of MetFrag2.2. combined with CFM--ID This figure shows the distribution of the number of top 1 ranks with different weights (100 drawn randomly between 0 and 1) for MetFrag2.2 and CFM--ID. Lightestyellow dot marks the maximum, 62 top 1 ranks at MetFrag = 0.67 and CFM-ID = 0.33. The red dot at the right marks the minimum, 36 top 1 ranks at MetFrag = 0.997 and CFM-ID = 0.003. The most left dot marks 49 top 1 ranks at MetFrag = 0.02 and CFM-ID = 0.98.