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Create energy conversion chains for final and useful last stages

specify_last_stages.Rd

We have two ways to describe the energy conversion chain: with last stage of "Final" and last stage of "Useful". This function takes .df (assumed to be last_stage = "Useful") and converts to last_stage = "Final" by adding a last_stage column with appropriate values.

Usage

specify_last_stages(
  .df,
  stage = MWTools::mw_constants$stage_col,
  last_stage = MWTools::mw_cols$last_stage,
  final = MWTools::last_stages$final,
  useful = MWTools::last_stages$useful
)

Arguments

.df

A data frame, probably the output of specify_fu_machines().

stage

See MWTools::mw_constants.

last_stage

See MWTools::mw_cols.

final, useful

See MWTools::last_stages.

Value

A data frame containing a new column last_stage and rows for both final and useful being the last stage.

Examples

hmw_df <- hmw_test_data_path() %>%
  read.csv() %>%
  calc_hmw_pfu()
amw_df <- amw_test_data_path() %>%
  read.csv() %>%
  calc_amw_pfu()
specify_energy_type_method(hmw_df, amw_df) %>%
  specify_product() %>%
  MWTools::specify_primary_production() %>%
  specify_useful_products() %>%
  specify_fu_machines() %>%
  specify_last_stages()
#> # A tibble: 7,686 × 11
#>    Country  Year Species       Stage Sector Unit    E.dot Energ…¹ Method Product
#>    <chr>   <dbl> <chr>         <chr> <chr>  <chr>   <dbl> <chr>   <chr>  <chr>  
#>  1 GBR      1960 Human females Final Agric… EJ    8.68e-4 E       PCM    Food   
#>  2 GBR      1960 Human females Final Indus… EJ    1.54e-2 E       PCM    Food   
#>  3 GBR      1960 Human females Final Servi… EJ    2.82e-2 E       PCM    Food   
#>  4 GBR      1960 Human females Prim… Agric… EJ    1.40e-3 E       PCM    Biomass
#>  5 GBR      1960 Human females Prim… Indus… EJ    2.48e-2 E       PCM    Biomass
#>  6 GBR      1960 Human females Prim… Servi… EJ    4.55e-2 E       PCM    Biomass
#>  7 GBR      1960 Human males   Final Agric… EJ    4.64e-3 E       PCM    Food   
#>  8 GBR      1960 Human males   Final Indus… EJ    5.69e-2 E       PCM    Food   
#>  9 GBR      1960 Human males   Final Servi… EJ    3.76e-2 E       PCM    Food   
#> 10 GBR      1960 Human males   Prim… Agric… EJ    7.49e-3 E       PCM    Biomass
#> # … with 7,676 more rows, 1 more variable: Last.stage <chr>, and abbreviated
#> #   variable name ¹​Energy.type