# File lib/heroku/commands/pgbackups.rb, line 266
        def initialize(data, opts={})
          rows = []
          data.each { |d| rows += d }
          columns = rows.transpose

          max_widths = columns.map { |c|
            c.map { |datum| datum.length }.max
          }

          max_widths = [10, 10] if opts[:display_columns]

          @columns = []
          columns.each_with_index { |c,i|
            column = @columns[i] = []
            c.each { |d| column << d.ljust(max_widths[i]) }
          }
          @rows = @columns.transpose
        end