Figure 4

QUIMBI user interface. (a) The main panel with a selected reference pixel. The pseudocoloring shows the similarity of each pixel spectrum to the selected reference pixel. (b) The spectrum viewer shows the mass spectrum of the selected reference pixel. Hovering the spectrum with the mouse shows an annotation about the \(m/z\) value and the intensity at the mouse position. (c) Color scale legend combined with a similarity value histogram plot. (d) Position indicator.