# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 # set output 'contours.20.png' set key at screen 1, 0.9 right top vertical Right noreverse enhanced autotitle nobox unset key set style textbox opaque margins 0.5, 0.5 fc bgnd noborder linewidth 1.0 set view 20, 340, 1, 1.1 set isosamples 60, 60 set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover set cntrlabel format '%8.3g' font ',7' start 2 interval 20 set cntrparam order 8 set style data lines set xyplane relative 0 set ztics norangelimit logscale autofreq set title "Rosenbrock Function" set xlabel "x" set xrange [ * : * ] noreverse writeback set x2range [ * : * ] noreverse writeback set ylabel "y" set yrange [ * : * ] noreverse writeback set y2range [ * : * ] noreverse writeback set zlabel "Z " set zlabel offset character 1, 0, 0 font "" textcolor lt -1 norotate set zrange [ * : * ] noreverse writeback set cbrange [ * : * ] noreverse writeback set rrange [ * : * ] noreverse writeback set logscale z 10 set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front noinvert bdefault Rosenbrock(x,y) = (1-x)**2 + 100*(y - x**2)**2 NO_ANIMATION = 1 ## Last datafile plotted: "glass.dat" splot [-1.5:1.5] [-0.5:1.5] Rosenbrock(x,y)