f(x,y)=2*x**2-x+y**2
unset key
set xrange[0:10]
set yrange[0:10]
set zrange[0:300]
set ticslevel 0
set ztics 0,25,300
set pm3d
set contour surface
set view 57,12,,1.4
set cntrparam levels incremental 0,25,300
splot f(x,y)
set term postscript eps enhanced monochrome
set output "mono.eps"
replot
set ticslevel 0
set view 120, 30, 1, 1
set isosamples 21,21
set pm3d
set contour surface
splot [x=0:5] [y=10:0] [0:6] x*x*y*exp(-x) with lines
set term postscript eps enhanced monochrome
set output "mono.eps"
replot
reset
set term postscript enhanced eps color solid monochrome
set encoding default
set border 116 #lt -1 lw 1.000
set size square 1.41,1.41
f(x,y)=2*x*(y+1)
set xrange[0:10]
set yrange[0:12] #reverse ??
set zrange[0:280]
set xlabel "X" font " ,24"
set ylabel "Y" font " ,24"
set zlabel "Z" font " ,24"
unset key
set ticslevel 0
zdec=20
set label "R" at 4,4,f(4,4)+zdec font " ,24" front left
set label "P" at 5,11,f(5,11)+zdec font " ,24" front
set label "M" at 8,9,f(8,9)+zdec font " ,24" front
set ztics 0,40,280
set view 40,300,1,1
set contour surface
set pm3d at s
set samples 60, 72
set isosamples 11, 13
set grid ztics lt 1 lw 2
set pm3d at s
set cntrparam levels incremental 0,40,280
set palette negative gamma 1.5
set colorbox vert user origin .02,.1 size .04,.8
splot f(x,y) lw 2 ,'-' notitle with points pt 7 ps 1
4 4 40
5 11 120
8 9 160
2004-2025 © Mathazay - Tous droits réservés
Ce site est géré sous
SPIP 3.0.17 [21515]
et utilise le squelette
EVA-Web 4.2
Dernière mise à jour : lundi 7 septembre 2015