Class: Jkr::Analytics

Inherits:
Object
  • Object
show all
Defined in:
lib/jkr/analytics.rb

Class Method Summary collapse

Class Method Details

.each_group(results, variable, opt = {}) ⇒ Object 



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# File 'lib/jkr/analytics.rb', line 15

def each_group(results, variable, opt = {})
  # extract parameters given as variables
  param_keys = results.first[:params].keys.select do |param_key|
    values = results.map do |result|
      normalize_param(param_key, result[:params][param_key])
    end
    values.all?{|val| ! val.nil?} && values.sort.uniq.size > 1
  end

  unless param_keys.include?(variable)
    raise ArgumentError.new("Invalid variable: #{variable.inspect}")
  end
  [:start_time, :end_time].each do |obsolete_key|
    if param_keys.include?(obsolete_key)
      $stderr.puts("#{obsolete_key} should not be included in result[:params]")
      param_keys.delete(obsolete_key)
    end
  end
  param_keys.delete(:trial)
  param_keys.delete(variable)
  if opt[:except]
    opt[:except].each do |key|
      param_keys.delete(key)
    end
  end

  results.group_by do |result|
    param_keys.map{|key| normalize_param(key, result[:params][key])}
  end.sort_by do |group_param, group|
    group_param
  end.each do |group_param, group|
    group = group.sort_by{|result| result[:params][variable]}
    yield(group_param, group)
  end
end

.hton(str) ⇒ Object 



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# File 'lib/jkr/analytics.rb', line 51

def hton(str)
  if str.is_a? Numeric
    return str
  end

  units = {
    'k' => 1024, 'K' => 1024,
    'm' => 1024*1024, 'M' => 1024*1024,
    'g' => 1024*1024*1024, 'G' => 1024*1024*1024,
  }

  if str =~ /(\d+)([kKmMgG]?)/
    num = $1.to_i
    unit = $2
    if unit.size > 0
      num *= units[unit]
    end
  else
    raise ArgumentError.new("#{str} is not a valid number expression")
  end
  num
end

.normalize_param(key, value = nil) ⇒ Object 



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# File 'lib/jkr/analytics.rb', line 5

def normalize_param(key, value = nil)
  if value.is_a? TrueClass
    return key.to_s + "_true"
  elsif value.is_a? FalseClass
    return key.to_s + "_false"
  end

  value
end