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Par : mathazay
Publié : 24 juin 2006

GnuPlot un grapheur libre et gratuit

France métro

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

Calédonie

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
PNG - 36.6 ko
Asie2004
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