62 lines
1.5 KiB
Markdown
62 lines
1.5 KiB
Markdown
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This is really just
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plot!([0,cos(θ)],[0,sin(θ)], arrow=true)
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https://stackoverflow.com/questions/58219191/drawing-an-arrow-with-specified-direction-on-a-point-in-scatter-plot-in-julia
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https://github.com/m3g/CKP/blob/master/disciplina/codes/velocities.jl
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using Plots
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using LaTeXStrings
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function arch(θ₁,θ₂;radius=1.,Δθ=1.)
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θ₁ = π*θ₁/180
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θ₂ = π*θ₂/180
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Δθ = π*Δθ/180
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l = round(Int,(θ₂-θ₁)/Δθ)
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x = zeros(l)
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y = zeros(l)
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for i in 1:l
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θ = θ₁ + i*Δθ
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x[i] = radius*cos(θ)
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y[i] = radius*sin(θ)
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end
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return x, y
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end
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plot()
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x, y = arch(0,360)
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plot(x,y,seriestype=:shape,label="",alpha=0.5)
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x, y = arch(0,360,radius=0.95)
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plot!(x,y,seriestype=:shape,label="",fillcolor=:white)
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x, y = arch(0,360,radius=0.7)
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plot!(x,y,seriestype=:shape,label="",alpha=0.5,fillcolor=:red)
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x, y = arch(0,360,radius=0.65)
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plot!(x,y,seriestype=:shape,label="",fillcolor=:white)
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plot!([0,0],[0,1.1],arrow=true,color=:black,linewidth=2,label="")
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plot!([0,1.1],[0,0],arrow=true,color=:black,linewidth=2,label="")
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x, y = arch(15,16,radius=0.65)
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plot!([0,x[1]],[0,y[1]],arrow=true,color=:black,linewidth=1,label="")
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x, y = arch(35,36,radius=0.95)
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plot!([0,x[1]],[0,y[1]],arrow=true,color=:black,linewidth=1,label="")
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plot!(draw_arrow=true)
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plot!(showaxis=:no,ticks=nothing,xlim=[-0.1,1.1],ylim=[-0.1,1.1],)
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plot!(xlabel="x",ylabel="y",size=(400,400))
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annotate!(0.58,-0.07,text(L"\Delta v_1",10))
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annotate!(0.88,-0.07,text(L"\Delta v_2",10))
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savefig("./velocities.pdf")
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