# File lib/chart-candy/builder/base.rb, line 44
  def set_period_from_data(data)
    @from = data.first
    @to = data.last

    @chart[:step] = ChartCandy::Builder.get_step_from_interval(data[1] - data[0]) if not @chart[:step]

    @chart[:period] = ChartCandy::Builder.period @from, @to, step: @chart[:step]
  end