\documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture}[scale=0.3] \foreach \x in {0,...,32} \fill (\x,0) circle (0.1); \foreach \x in {0,...,31} \fill (\x*32/31,1) circle (0.1); \foreach \x in {0,...,30} \fill (\x*32/30,2) circle (0.1); \foreach \x in {0,...,28} \fill (\x*32/28,3) circle (0.1); \foreach \x in {0,8,16,24,32} \draw[very thin] (\x,0) -- (\x,3); \end{tikzpicture} \end{document}