gaston-demo.sagews

testing Gaston with Julia in CoCalc in a Sage worksheet

Gaston provides an interface to gnuplot from the Julia language system.

Selected examples from the excellent Gaston Tutorial

There is a Jupyter notebook version of this worksheet.

links

• https://github.com/mbaz/Gaston.jl

• https://docs.julialang.org/en/stable/manual/packages/

• https://nbviewer.jupyter.org/github/mbaz/Gaston.jl/blob/master/doc/gaston-tutorial.ipynb

%auto
%default_mode julia

versioninfo()

Julia Version 0.6.2 Commit d386e40c17 (2017-12-13 18:08 UTC) Platform Info: OS: Linux (x86_64-pc-linux-gnu) CPU: Intel(R) Xeon(R) CPU @ 2.20GHz WORD_SIZE: 64 BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell) LAPACK: libopenblas64_ LIBM: libopenlibm LLVM: libLLVM-3.9.1 (ORCJIT, broadwell)

Pkg.status()

1 required packages: - Gaston 0.7.4

Pkg.add("Gaston")

INFO: Package Gaston is already installed

# make sure gnuplot is installed
run(`gnuplot --version`)

gnuplot 5.0 patchlevel 3

using Gaston

# 2D plot
t = 0:0.01:1
plot(t, sin.(2π*5*t))

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# 3D plot
x = y = -15:0.33:15
surf(x,y,(x,y)->sin.(sqrt.(x.*x+y.*y))./sqrt.(x.*x+y.*y),title="Sombrero",plotstyle="pm3d")

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# image
Z = [5 4 3 1 0; 2 2 0 0 1; 0 0 0 1 0; 0 1 2 4 3]
imagesc(Z,title="Simple scaled image")

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# histogram
histogram(rand(1000),bins=15,norm=1,title="Histogram",yrange="[0:1.6]")

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