Module: Mooncats::Dataset

Defined in:
lib/mooncats/dataset.rb

Class Method Summary collapse

Class Method Details

.read(path = './datasets/mooncats/*.csv') ⇒ Object 



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# File 'lib/mooncats/dataset.rb', line 6

def self.read( path='./datasets/mooncats/*.csv' )

  datasets = Dir.glob( path )
  ## pp datasets

  #=> ["./datasets/mooncats/00.csv",

  #    "./datasets/mooncats/01.csv",

  #    "./datasets/mooncats/02.csv",

  #    "./datasets/mooncats/03.csv",

  #    "./datasets/mooncats/04.csv",

  #     ...]


  rows = []
  datasets.each do |dataset|
    rows += CsvHash.read( dataset )
  end

  ## puts "  #{rows.size} rows(s)"

  #=> 25440 rows(s)



  ### wrap in mooncat struct for easier access

  mooncats = []
  rows.each_with_index do |row,i|
    ## print "."  if i % 100

    id    = row['id']
    ## note: skip all derived column from id e.g.

    ##        - r,g,b, etc.


    mint  = row['mint'].to_i

    mooncats << Metadata.new( id )
  end
  ## print "\n"   ## add progress


  mooncats
end