Fuzzy logics (especially fuzzy numbers and fuzzy intervals) can be beautifully plotted on a graph, …. aaaand of course, you can also do this using LaTeX and pgfplots! \begin{tikzpicture} \begin{axis}[ height=3.5cm, width=\textwidth/2, ytick={0,1}, xtick={4,6}, area style, xlabel={$$}, xmin=0,xmax=10, axis x line=bottom, axis y line=left, %ylabel={$$}, enlarge x limits=false ] \addplot[fill, red, opacity=0.2] coordinates {(2.5,0)(4,1)(6,1)(7.5,0)} \closedcycle; […]