144 lines
5.0 KiB
Julia
144 lines
5.0 KiB
Julia
using Gnuplot
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function gp_test()
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x = collect(1.:100);
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#-----------------------------------------------------------------
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for i in 1:10
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@gp :gp1 "plot sin($i*x)"
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@gp :gp2 "plot sin($i*x)"
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@gp :gp3 "plot sin($i*x)"
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sleep(0.3)
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end
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quitall()
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#-----------------------------------------------------------------
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@gp "plot sin(x)"
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@gp "plot sin(x)" "pl cos(x)"
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@gp "plo sin(x)" "s cos(x)"
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@gp "plot sin(x)" :-
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@gp :- "plot cos(x)"
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@gp "plot sin(x)" 2 xr=(-2pi,2pi) "pause 2" "plot cos(4*x)"
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x = range(-2pi, stop=2pi, length=100);
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y = 1.5 * sin.(0.3 .+ 0.7x) ;
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noise = randn(length(x))./2;
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e = 0.5 * fill(1, size(x));
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@gp hist(noise, nbins=10)
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@gp x y
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@gp x y "w l"
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d = "\$aa"
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@gp x y d "plot $d w l" "pl $d u 1:(2*\$2) w l"
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@gsp randn(Float64, 30, 50)
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@gp randn(Float64, 30, 50) "w image"
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@gsp x y y
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@gp("set key horizontal", "set grid",
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xrange=(-7,7), ylabel="Y label",
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x, y, "w l t 'Real model' dt 2 lw 2 lc rgb 'red'",
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x, y+noise, e, "w errorbars t 'Data'")
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@gp "f(x) = a * sin(b + c*x); a = 1; b = 1; c = 1;" :-
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@gp :- x y+noise e "\$aa" :-
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@gp :- "fit f(x) \$aa u 1:2:3 via a, b, c;" :-
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@gp :- "set multiplot layout 2,1" :-
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@gp :- "plot \$aa w points" ylab="Data and model" :-
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@gp :- "plot \$aa u 1:(f(\$1)) w lines" :-
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@gp :- 2 xlab="X label" ylab="Residuals" :-
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@gp :- "plot \$aa u 1:((f(\$1)-\$2) / \$3):(1) w errorbars notit"
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# Retrieve values fr a, b and c
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a = parse(Float64, gpeval("print a"))
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b = parse(Float64, gpeval("print b"))
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c = parse(Float64, gpeval("print c"))
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gnuplot(:dry, dry=true)
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@gp :dry "f(x) = a * sin(b + c*x); a = 1; b = 1; c = 1;" :-
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@gp :- :dry "a = $a; b = $b; c = $c" :-
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@gp :- :dry "set multiplot layout 2,1" ylab="Data and model" :-
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d = "\$aa"
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@gp :- :dry x y+noise e d :-
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@gp :- :dry "plot $d w points" :-
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@gp :- :dry "plot $d u 1:(f(\$1)) w lines" :-
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@gp :- :dry 2 xlab="X label" ylab="Residuals" :-
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@gp :- :dry "plot $d u 1:((f(\$1)-\$2) / \$3):(1) w errorbars notit" :-
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@gp :- :dry file="test" # write on file test
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gpeval("load 'test'") # load file test
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#-----------------------------------------------------------------
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@gp("""
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approx_1(x) = x - x**3/6
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approx_2(x) = x - x**3/6 + x**5/120
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approx_3(x) = x - x**3/6 + x**5/120 - x**7/5040
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label1 = "x - {x^3}/3!"
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label2 = "x - {x^3}/3! + {x^5}/5!"
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label3 = "x - {x^3}/3! + {x^5}/5! - {x^7}/7!"
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#
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set termoption enhanced
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save_encoding = GPVAL_ENCODING
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set encoding utf8
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#
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set title "Polynomial approximation of sin(x)"
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set key Left center top reverse
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set xrange [ -3.2 : 3.2 ]
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set xtics ("-π" -pi, "-π/2" -pi/2, 0, "π/2" pi/2, "π" pi)
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set format y "%.1f"
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set samples 500
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set style fill solid 0.4 noborder""",
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"plot '+' using 1:(sin(\$1)):(approx_1(\$1)) with filledcurve title label1 lt 3",
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"plot '+' using 1:(sin(\$1)):(approx_2(\$1)) with filledcurve title label2 lt 2",
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"plot '+' using 1:(sin(\$1)):(approx_3(\$1)) with filledcurve title label3 lt 1",
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"plot sin(x) with lines lw 1 lc rgb 'black'")
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#-----------------------------------------------------------------
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@gp("""
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set zrange [-1:1]
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unset label
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unset arrow
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sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)
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set xrange [-5:5]; set yrange [-5:5]
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set arrow from 5,-5,-1.2 to 5,5,-1.2 lt -1
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set label 1 "increasing v" at 6,0,-1
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set arrow from 5,6,-1 to 5,5,-1 lt -1
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set label 2 "u=0" at 5,6.5,-1
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set arrow from 5,6,sinc(5,5) to 5,5,sinc(5,5) lt -1
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set label 3 "u=1" at 5,6.5,sinc(5,5)
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set parametric
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set hidden3d offset 0 # front/back coloring makes no sense for fenceplot #
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set isosamples 2,33
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xx=-5; dx=(4.99-(-4.99))/9
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x0=xx; xx=xx+dx
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x1=xx; xx=xx+dx
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x2=xx; xx=xx+dx
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x3=xx; xx=xx+dx
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x4=xx; xx=xx+dx
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x5=xx; xx=xx+dx
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x6=xx; xx=xx+dx
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x7=xx; xx=xx+dx
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x8=xx; xx=xx+dx
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x9=xx; xx=xx+dx""",
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"splot [u=0:1][v=-4.99:4.99]x0, v, (u<0.5) ? -1 : sinc(x0,v) notitle",
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"splot x1, v, (u<0.5) ? -1 : sinc(x1,v) notitle",
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"splot x2, v, (u<0.5) ? -1 : sinc(x2,v) notitle",
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"splot x3, v, (u<0.5) ? -1 : sinc(x3,v) notitle",
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"splot x4, v, (u<0.5) ? -1 : sinc(x4,v) notitle",
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"splot x5, v, (u<0.5) ? -1 : sinc(x5,v) notitle",
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"splot x6, v, (u<0.5) ? -1 : sinc(x6,v) notitle",
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"splot x7, v, (u<0.5) ? -1 : sinc(x7,v) notitle",
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"splot x8, v, (u<0.5) ? -1 : sinc(x8,v) notitle",
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"splot x9, v, (u<0.5) ? -1 : sinc(x9,v) notitle")
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quitall()
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return true
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end
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gp_test()
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