set title "Monotonic cubic splines" set style data lines set xrange [ 233. : 388. ] set yrange [ 1.75 : 32.0 ] plot 'silver.dat' using 1:2 with points pt 7 ps 2 lc "grey" title 'raw data', \ '' using 1:2 smooth csplines lt 1 title 'smooth cspline', \ '' using 1:2 smooth mcs lt 3 title 'smooth mcs' pause -1 "Hit to continue" set title "Monotonic cubic splines (log-scale data)" set log y set ytics (1,2,3,4,5,10,20) refresh pause -1 "Hit to continue" reset