Module: Enumerable

Included in:
Jtl::DataSet
Defined in:
lib/jtl/core_ext/enumerable.rb

Instance Method Summary collapse

Instance Method Details

#frequencies(interval = nil, &block) ⇒ Object 



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# File 'lib/jtl/core_ext/enumerable.rb', line 6

def frequencies(interval = nil, &block)
  if interval
    fs0 = self.map {|i| i - i % interval }.frequencies(&block)
    fs = {}

    (fs0.keys.min..fs0.keys.max).step(interval).each do |n|
      fs[n] = fs0[n] || 0
    end

    fs
  else
    frequencies_orig(&block)
  end
end

#frequencies_orig ⇒ Object 



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# File 'lib/jtl/core_ext/enumerable.rb', line 4

alias frequencies_orig frequencies

#to_gruff_labels ⇒ Object 



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# File 'lib/jtl/core_ext/enumerable.rb', line 21

def to_gruff_labels
  labels = {}

  self.each_with_index do |label, i|
    labels[i] = label
  end

  if block_given?
    labels = Hash[*labels.select {|k, v| yield(k, v) }.flatten]
  end

  Hash[*labels.map {|k, v| [k, v.to_s] }.flatten]
end