Group Comparison. Frequency plot comparison of two different groups (derived from two frequency plot datasets) representing different disease types. Once frequency plots have been loaded/created in SeeGH the user can compare two frequency plots using the overlay feature. Each group is a different color (Group 1 – Fuschia, Group 2 – Blue) and any overlapping regions are a third color (Intersection – Yellow). This is a useful feature to determine similarities and differences between two groups of samples.