Fig. 5.
(A) Schematic of the fit-improvement protocol. The grey bar represents the area that is interpolated to find the maximal height value, with the dashed red line representing the trace direction from which the perpendicular direction is determined. (B) Theoretical plot for a cross-section of height from a DNA molecule showing the original coordinate (Pintial, black point) and the corrected coordinate (Poptimal, blue point). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)