WEFNC Nexus Index — nexus_index • wefnexus

Computes a weighted composite Water-Energy-Food-Nutrient-Carbon nexus sustainability index from normalized dimension scores.

nexus_index(
  water_score,
  energy_score,
  food_score,
  nutrient_score,
  carbon_score,
  weights = rep(0.2, 5),
  verbose = TRUE
)

Arguments

water_score: Numeric vector. Water performance score (0 to 1).
energy_score: Numeric vector. Energy performance score (0 to 1).
food_score: Numeric vector. Food productivity score (0 to 1).
nutrient_score: Numeric vector. Nutrient use efficiency score (0 to 1).
carbon_score: Numeric vector. Carbon performance score (0 to 1), where higher values indicate lower carbon footprint.
weights: Numeric vector of length 5. Weights for Water, Energy, Food, Nutrient, and Carbon dimensions. Must sum to 1. Default is equal weighting (0.2 each).
verbose: Logical. If TRUE, prints informational messages. Default TRUE.

Value

Numeric vector. Composite nexus index on a 0 to 1 scale, where higher values indicate better overall sustainability.

Details

$$NI = w_W S_W + w_E S_E + w_F S_F + w_N S_N + w_C S_C$$

Examples

# \donttest{
nexus_index(water_score = c(0.85, 0.72), energy_score = c(0.70, 0.80),
            food_score = c(0.90, 0.85), nutrient_score = c(0.65, 0.70),
            carbon_score = c(0.80, 0.60))
#> Nexus index computed: 2 values.
#> [1] 0.780 0.734

# }