# # $Id: surface1.dem,v 1.12 2012/07/07 05:18:18 sfeam Exp $ # set title "3D surface from a grid (matrix) of Z values" set xrange [-0.5:4.5] set yrange [-0.5:4.5] set grid set hidden3d $grid << EOD 5 4 3 1 0 2 2 0 0 1 0 0 0 1 0 0 0 0 2 3 0 1 2 4 3 EOD splot '$grid' matrix with lines notitle |
unset hidden3d undefine $* set samples 21 set isosample 11 set xlabel "X axis" offset -3,-2 set ylabel "Y axis" offset 3,-2 set zlabel "Z axis" offset -5 set title "3D surface from a function" set label 1 "This is the surface boundary" at -10,-5,150 center set arrow 1 from -10,-5,120 to -10,0,0 nohead set arrow 2 from -10,-5,120 to 10,0,0 nohead set arrow 3 from -10,-5,120 to 0,10,0 nohead set arrow 4 from -10,-5,120 to 0,-10,0 nohead set xrange [-10:10] set yrange [-10:10] splot x*y |
unset arrow unset label set grid splot x**2+y**2, x**2-y**2 |
rep x*y |
rep (x**3+y**3)/10 |
set ticslevel 0.0 set title "3D gnuplot demo ( ticslevel = 0.0 )" rep |
set ticslevel 2.0 set title "3D gnuplot demo ( ticslevel = 2.0 )" rep |
set ticslevel 0.5 set title "3D gnuplot demo ( ticslevel = 0.5 )" rep |
set title "3D gnuplot demo" unset grid splot x*y with points |
unset xtics unset ytics set xrange [-1:1] set yrange [-1:1] set title "Surfaces with no grid or tics" splot x*y with lines, x**2*y**3 with dots, x**3*y*2 with points |
set xtics ("low" -3, "mid" 0, "high" 3)
set ytics -2,0.5,2
set xrange [-3:3]
set yrange [-3:3]
set log z
set title "Surfaces with z log scale"
splot x**2*y**2 + 2, x**2*y**4 + 2, x**4*y**2 + 2
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unset log z set xtics autofreq set ytics autofreq set xrange [-1:1] set yrange [-1:1] set samples 51 set isosample 21 set dummy u,v set title "3D gnuplot demo" splot u*v / (u**2 + v**2 + 0.1) |
splot [x=-3:3] [y=-3:3] sin(x) * cos(y) |
set zrange [-1.0:1.0] replot |
set title "Sinc function" set zrange [-1:1] set label 1 "This is equal to 1" at 0,3.2,1 left set arrow 1 from 0,3,1 to 0,0,1 sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2) splot [-5:5.01] [-5:5.01] sinc(u,v) |
set view 70,20,1 set zrange [-0.5:1.0] set ztics -1,0.25,1 set label 1 "This is equal to 1" at -5,-2,1.5 centre set arrow 1 from -5,-2.1,1.4 to 0,0,1 splot [-12:12.01] [-12:12.01] sinc(u,v) |
set title "\"fence plot\" using separate parametric surfaces" # A method suggested by Hans-Bernhard Broeker # <broeker@physik.rwth-aachen.de>: display a separate parametric # surface for each fence. set zrange [-1:1] unset label unset arrow set xrange [-5:5]; set yrange [-5:5] set arrow from 5,-5,-1.2 to 5,5,-1.2 lt -1 set label 1 "increasing v" at 6,0,-1 set arrow from 5,6,-1 to 5,5,-1 lt -1 set label 2 "u=0" at 5,6.5,-1 set arrow from 5,6,sinc(5,5) to 5,5,sinc(5,5) lt -1 set label 3 "u=1" at 5,6.5,sinc(5,5) set parametric set hidden3d set isosamples 2,33 xx=-5; dx=(4.99-(-4.99))/9 x0=xx; xx=xx+dx x1=xx; xx=xx+dx x2=xx; xx=xx+dx x3=xx; xx=xx+dx x4=xx; xx=xx+dx x5=xx; xx=xx+dx x6=xx; xx=xx+dx x7=xx; xx=xx+dx x8=xx; xx=xx+dx x9=xx; xx=xx+dx splot [u=0:1][v=-4.99:4.99] \ x0, v, (u<0.5) ? -1 : sinc(x0,v) notitle, \ x1, v, (u<0.5) ? -1 : sinc(x1,v) notitle, \ x2, v, (u<0.5) ? -1 : sinc(x2,v) notitle, \ x3, v, (u<0.5) ? -1 : sinc(x3,v) notitle, \ x4, v, (u<0.5) ? -1 : sinc(x4,v) notitle, \ x5, v, (u<0.5) ? -1 : sinc(x5,v) notitle, \ x6, v, (u<0.5) ? -1 : sinc(x6,v) notitle, \ x7, v, (u<0.5) ? -1 : sinc(x7,v) notitle, \ x8, v, (u<0.5) ? -1 : sinc(x8,v) notitle, \ x9, v, (u<0.5) ? -1 : sinc(x9,v) notitle |
set title "\"fence plot\" using single parametric surface with undefined points" # Another method suggested by Hans-Bernhard Broeker # <broeker@physik.rwth-aachen.de>: Use parametric variable u to control # x, y, and z. u=3*fencenumber+remainder, where the remainder selects # one of three types of points: # remainder=0: x=xmin+fencenumber*dx, y=v, z=zbase # remainder=1: x=xmin+fencenumber*dx, y=v, z=f(x,y) # remainder=2: x=xmin+fencenumber*dx, y=v, z=1/0 (undefined) set parametric unset label unset arrow xmin=-4.99; xmax=5; n=10; dx=(xmax-xmin)/(n-1.) set isosamples 3*n,33 zbase=-1 set arrow from 5,-5,-1.2 to 5,5,-1.2 lt -1 set label 1 "increasing v" at 6,0,-1 set arrow from -5,-5,-1.2 to 5,-5,-1.2 lt -1 set label 2 "increasing u" at 0,-5,-1.5 set arrow from 5,6,-1 to 5,5,-1 lt -1 set label 3 "floor(u)%3=0" at 5,6.5,-1 set arrow from 5,6,sinc(5,5) to 5,5,sinc(5,5) lt -1 set label 4 "floor(u)%3=1" at 5,6.5,sinc(5,5) splot [u=.5:3*n-.5][v=-4.99:4.99] \ xmin+floor(u/3)*dx, v, ((floor(u)%3)==0) ? zbase : \ (((floor(u)%3)==1) ? sinc(xmin+u/3.*dx,v) : 1/0) notitle |
unset hidden3d; unset parametric; set isosamples 20,20 set xrange [-1:1]; set yrange [-1:1] set ztics autofreq unset arrow unset label set log set auto set title "This has logarithmic scale" splot [x=1:15] [y=1:15] x**2+y**2 |
unset log set xrange [0:15] set yrange [0:15] set auto #set zrange [-0.6:0.7] set ticslevel 0 set style data lines set title "Data grid plotting" set parametric splot "glass.dat" |
splot "glass.dat" using 3:2:1 |
set zrange [-1.2:1.2] set ticslevel 0.5 unset parametric set xlabel "line index within group" set ylabel "group index" splot "glass.dat" using 1, "glass.dat" using 2, "glass.dat" using 3 |
set title "splot of part of a data file" set xlabel "X axis" offset -3,-2 set ylabel "Y axis" offset 3,-2 set hidden3d splot 'glass.dat' every 2::0::12 with lines |
set title "splot with \"set pm3d\" (implemented with some terminals)" set pm3d set hidden3d splot 'glass.dat' every 2::0::12 with lines |
unset hidden3d unset pm3d set param set title "Test of spherical coordinates" set mapping spherical splot "glass.dat" |
# mandelbrot demo
set title "Mandelbrot function"
unset parametric
set mapping cartesian
set view 60,30,1,1
set auto
set isosamples 60
set hidden3d
compl(a,b)=a*{1,0}+b*{0,1}
mand(z,a,n) = n<=0 || abs(z)>100 ? 1:mand(z*z+a,a,n-1)+1
splot [-2:1][-1.5:1.5] mand({0,0},compl(x,y),30)
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reset |