Ruby Environment

require 'gnuplot'

Gnuplot::Plot.new do |plot|  

    plot.xrange '[-0.5:0.5]'

    plot.title  'Example plot'

    plot.ylabel 'x'

    plot.xlabel 'sin(1/x)'

    plot.samples 10000

    plot.data << Gnuplot::DataSet.new('sin(1/x)') do |ds|

        ds.with = 'lines'

        ds.linewidth = 2

    end

end

Gnuplot::SPlot.new do |plot|

    plot.title 'Spiral'

    plot.nokey

    plot.parametric

    plot.hidden3d

    plot.view '80,50'

    plot.isosamples '60,15'

    plot.xrange '[-8:8]'

    plot.yrange '[-8:8]'

    plot.zrange '[-8:8]'

    plot.urange '[-2*pi:2*pi]'

    plot.vrange '[-pi:pi]'

    plot.data << Gnuplot::DataSet.new('cos(u)*(cos(v)+3), sin(u)*(cos(v)+3), sin(v)+u') do |ds|

        ds.with = 'lines'

    end

end

require 'rubyvis'

Rubyvis::Panel.new do 

  width 150

  height 150

  bar do

    data [1, 1.2, 1.7, 1.5, 0.7, 0.3]

    width 20

    height {|d| d * 80}

    bottom(0)

    left {index * 25}

  end

end

require 'daru'

df = Daru::DataFrame.new({

  a: Array.new(100) {|i| i}, 

  b: 100.times.map{rand}

})

plot = df.plot type: :scatter, x: :a, y: :b

plot.export_html("/results/out.html")

cat NJ__REF_

apt-get -qq update

DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends \

  libyaml-dev libgdbm-dev libgsl-dev libsqlite3-dev libatlas-base-dev \

  libmagick++-dev imagemagick \

  bison gnuplot-nox 

apt-get clean

rm -r /var/lib/apt/lists/*

ln -sf /usr/bin/libtoolize /usr/bin/libtool

FILENAME="ruby-install-${RUBYINST_VERSION}.tar.gz"

FILEURL="https://github.com/postmodern/ruby-install/archive/v${RUBYINST_VERSION}.tar.gz"

wget --progress=dot -O /results/$FILENAME $FILEURL

tar -xzvf NJ__REF_

cd ruby-install-${RUBYINST_VERSION}/

sudo make install

ruby-install ruby ${RUBY_VERSION}

ln -fs /opt/rubies/ruby-${RUBY_VERSION}/bin /opt/rubies/

gem update --no-document --system

CPPFLAGS='-Wno-error=deprecated-declarations' \

  gem install --no-document rbczmq

gem install --no-document \

  ai4r algorithms awesome_print bibsync bibtex-ruby bio classifier-reborn ctioga2 daru darwinning decisiontree distribution extendmatrix gga4r gimuby gnuplot gnuplotrb gruff gsl hamster histogram integration iruby liblinear-ruby measurable mikon minimization nmatrix nyaplot parallel phys-units plotrb pry rb-libsvm rserve-client ruby-fann ruby-minisat rubyvis sciruby statsample statsample-bivariate-extension statsample-glm statsample-timeseries tioga unit \

  ffi-rzmq narray # narray added for gsl

iruby register

du -hsx /

jupyter kernelspec list

class Hello

  def initialize(greet)

    @greet = greet

  end

  def say()

    puts "Hello, #{@greet}"

  end

end

Hello.new("world").say()