require 'daru'

require 'open-uri'
content = open('https://raw.githubusercontent.com/v0dro/daru/master/spec/fixtures/music_data.tsv')
df = Daru::DataFrame.from_csv content, col_sep: "\t"
df.vectors = Daru::Index.new(df.vectors.to_a.map(&:to_sym))
df

# Group by artist name and call 'size' to see the number of rows each artist populates.
artists = df.group_by(:artname).size

artists.max_index

top_ten = artists.sort(ascending: false).head

top_ten.plot type: :bar do |plt|
  plt.yrange [0,300]
  plt.width 1120 
  plt.height 800
  plt.legend true
  plt.rotate_x_label 45
end