Scale PPR index by total primary production

Total primary production (PP) should be in units mtC year^-1, since PPR has units mtC year^-1. The ratio of PPR:PP is then returned

calc_ppr_scaled(
  PPR,
  PP,
  pprField = "INDEX",
  yearFieldPPR = "YEAR",
  ppField = "ANNUAL_MTON",
  yearFieldPP = "YEAR"
)

Arguments

PPR	Data frame (n x 2). Primary production required index over time. Two columns YEAR and INDEX
PP	List. First element labeled PP is a Data frame of size (n x 2). Columns YEAR, ANNUAL_MEAN. Second element labeled EPUarea is the area of the region
pprField	Character string. The name of the field in PPR which contains the PPR index data.
yearFieldPPR	Character string. The name of the field in PPR which contains the Year.
ppField	Character string. The name of the field in PP which contains the PP data.
yearFieldPP	Character string. The name of the field in PP which contains the Year.

Value

Data frame (n x 7)

YEAR

Year of scaled index

SCALEDINDEX

Ratio of PPR:PP

Details

Units: Percentage