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#
# Convex hulls
#
unset key
set xrange [-30:30]
set yrange [-30:30]
set border 3
set tics nomirror rangelimited
set style fill transparent solid 0.1 border

set title "Generation of convex hull bounding scattered points"

set style line 1 lc "black" pt 6
set style line 2 lc "forest-green" pt 7

plot for [i=0:1] 'hull.dat' index i with points ls (i+1), \
     for [i=0:1] '' index i convexhull with filledcurve ls (i+1)


Click here for minimal script to generate this plot

x		y
			①	②	③	④	⑤	⑥	⑦

set title "Smooth convex hull"

plot for [i=0:1] 'hull.dat' index i with points ls (i+1), \
     for [i=0:1] '' index i convexhull smooth path with filledcurve ls (i+1)


Click here for minimal script to generate this plot

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			①	②	③	④	⑤	⑥	⑦

set title "Smooth convex hull expanded by increment of 1.5"

plot for [i=0:1] 'hull.dat' index i with points ls (i+1), \
     for [i=0:1] '' index i convexhull expand 1.5 smooth path with filledcurve ls (i+1)


Click here for minimal script to generate this plot