Standardize calculation class/methods

[calmc]

The same calculations are performed in the spreadsheets to calculate energy intensity indices based on annual inputs of energy and activity for different measures (e.g., buses, million square feet of single family floorspace, primary metals manufacturing). These calculations should be made into classes/methods.

These shared calculations are also nested within economic sectors and for the overall economy. For instance, calculations(buses) -> calculations(Passenger-Highway) -> calculations(Passenger_Total) -> calculations(Total_Transportation) -> calculations(All_Sectors).

• Each uses the same calculations
  • transportation_indicators_021620['Buses'][D7:BP78])
• Results are passed from a lower level aggregation to the higher level aggregation
  • Annual energy intensity and structure indices are passed from Buses to Passenger-Highway.
  • See [Energy_weights] tab in each sector spreadsheet for the aggregation.

[calmc]

We should attempt to make these classes/methods sufficiently flexible that they can handle input data of historical observations (i.e., recreating the PNNL calculations), projections (i.e., EIA AEO data), and user input. The user input piece will likely be much more difficult to include.