Hi, Does anyone know how to set the position of the first grid line on a display of a histogram? In a histogram with an axis from 1-128, we would like to draw a gridline every 16 bins, with the first starting at 16. his->GetYaxis()->SetNdivision(8) Set the divisons, but what we see are lines at 20, 40,...,120. And we want them at 16, 32,...,128. Suzanne Panacek
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