Gnuplot Examples
http://rustam.uwp.edu/gnuplot_examples.html
set xlabel "x (meters)" set ylabel "y (meters)" plot sin(x)
#Plot a versus user-defined variable #The default variable is x, to change that to t is easy f(x) = exp(-x**2 / 2) plot [t=-4:4] f(t) title "Bell Curve", t**2 / 16 title "Parabola"
#Plot a non-smooth function f1(x)=(x<=25) ? x**2 : 0 f2(x)=(x>25) ? 625+50*(x-25) : f1(x) f3(x)=(x>100) ? 4375+50*(x-100)-(x-100)**2 : f2(x) # velocity functions v1(x)=(x<=25) ? 2*x : 0 v2(x)=(x>25) ? 50 : v1(x) v3(x)=(x>100) ? 50-2*(x-100) : v2(x) plot[0:125][0:60] v3(x)
#Plot a user defined function k=1.5 w=3.0 f(x,t)=sin(k*x-w*t) set xlabel "x (meters)" set ylabel "y (meters)" plot[0:5] f(x,0), f(x,0.1), f(x,0.2)
#Plot a set of points #This is very useful if the data points are generated by a program, cut and paste them into gnuplot. plot[0:3][0:10] x*x, "-" 1 1 2 4 3 9 e
#Looping #Create a plot of many functions dt=0.1 f(x,j)=sin(x-2.0*j*dt) plot for [j=0:10] f(x,j)
#Plot a recursive function #This is VERY cool, plot a Fourier series by defining it recursively and then plot its partial sums. pi=3.1415926 f(x,n)=(n>=0) ? sin((2*n+1)*x)/(2*n+1)+f(x,n-1) : 0 plot[-pi:pi] for [n=0:6] f(x,n)
#Three dimensional graphs kx=1.5 ky=1.0 w=3.0 f(x,y,t)=sin(kx*x+ky*y-w*t) splot[0:5][0:5] f(x,y,1)
#Three dimensional graphs (contour) set contour set view 60,45 set isosample 20,20 f(x,y,t)=exp(-x*x-y*y) splot[-5:5][-5:5] f(x,y,1)
#Three dimensional graphs (contour) set contour set view 0,0 set isosample 20,20 set nosurface f(x,y,t)=exp(-x*x-y*y) splot[-5:5][-5:5] f(x,y,1)
#Parametric surface plot set dummy u,v set key bmargin center horizontal Right noreverse enhanced autotitles nobox set parametric set view 45, 50, 1, 1 set isosamples 40, 20 set hidden3d # this makes the foreground obscure the background set ztics border in scale 1,0.5 nomirror norotate set title "Parametric Sphere" set urange [ -1.57080 : 1.57080 ] noreverse nowriteback set vrange [ 0.00000 : 6.28319 ] noreverse nowriteback splot cos(u)*cos(v),cos(u)*sin(v),sin(u)
#Animation #Create an animated GIF, a crude animation set term gif tiny animate delay 10 set size 1.0, 0.8 dt=0.05 f(x,j)=sin(2.0*x-2.0*j*dt)+ sin(2.4*x-2.4*j*dt) j=0 plot[-10:10] f(x,0) plot[-10:10] f(x,1) plot[-10:10] f(x,2) plot[-10:10] f(x,3) plot[-10:10] f(x,4) plot[-10:10] f(x,5) plot[-10:10] f(x,6) plot[-10:10] f(x,7) plot[-10:10] f(x,8) plot[-10:10] f(x,9) plot[-10:10] f(x,10) plot[-10:10] f(x,11) plot[-10:10] f(x,12) plot[-10:10] f(x,13) plot[-10:10] f(x,14) plot[-10:10] f(x,15) plot[-10:10] f(x,16) plot[-10:10] f(x,17) plot[-10:10] f(x,18) plot[-10:10] f(x,19) plot[-10:10] f(x,20) plot[-10:10] f(x,21) plot[-10:10] f(x,22) plot[-10:10] f(x,23) plot[-10:10] f(x,24) plot[-10:10] f(x,25) plot[-10:10] f(x,26) plot[-10:10] f(x,27) plot[-10:10] f(x,28) plot[-10:10] f(x,29) plot[-10:10] f(x,30)
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