# set terminal pngcairo  background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'piecewise.1.png'
unset border
set key inside center top vertical Left reverse enhanced autotitles nobox
set style data lines
set xzeroaxis linetype 0 linewidth 1.000
set yzeroaxis linetype 0 linewidth 1.000
set xtics axis out scale 1,8 mirror norotate  offset character 0, 0, 0 autojustify
set xtics add  (1.00000 1, 6.28319 1)
set ytics axis in scale 1,0.5 mirror norotate  offset character 0, 0, 0 autojustify
set title "Piecewise function sampling" 
set title  offset character 0, 0, 0 font ",15" norotate
set xrange [ -2.00000 : 10.0000 ] noreverse nowriteback
y = 0
plot y=0, [*:1] x, [1:2.*pi] cos(x), [2.*pi:10] (x-8)**2