wefnexus 1.0.0
Initial CRAN release
Water Module (7 functions)
water_use_efficiency() - WUE (kg/ha/mm)
water_productivity() - Physical and economic WP
(kg/m3)
water_footprint() - Green, blue, grey WF
decomposition
irrigation_efficiency() - Conveyance, application,
overall, consumptive
crop_water_stress_index() - CWSI bounded 0-1
crop_water_productivity() - CWP (kg/m3) from ET
depleted_fraction() - Basin-level water allocation
metric
Energy Module (10 functions)
energy_input() - 15-component energy input
aggregation
energy_output() - Grain + straw energy with
customizable coefficients
energy_use_efficiency() - EUE ratio
eroi() - Energy Return on Investment with
interpretation
energy_productivity() - Yield per MJ input
energy_intensity() - MJ per kg yield
specific_energy() - MJ/ha/day for duration
comparisons
net_energy() - Energy balance (output minus input)
energy_profitability() - Economic return per MJ
human_energy_profitability() - Labour energy
amplification ratio
Food Module (8 functions)
food_productivity_index() - Composite
yield-protein-calorie index
crop_yield_index() - Relative to check treatment
harvest_index() - Economic to biological yield
ratio
land_equivalent_ratio() - Intercropping advantage
(LER)
system_productivity_index() - Multi-crop system
equivalent
caloric_yield() - kcal/ha output
protein_yield() - kg protein/ha
production_efficiency_index() - Yield per unit
cost
Nutrient Module (8 functions)
agronomic_efficiency() - AE (kg yield increase/kg
nutrient)
physiological_efficiency() - PE (yield/uptake
increase)
recovery_efficiency() - RE (uptake
increase/applied)
partial_factor_productivity() - PFP (total
yield/applied)
internal_utilization_efficiency() - IUE (yield/total
uptake)
nutrient_harvest_index() - NHI (grain/total plant
nutrient)
nutrient_balance() - N-P-K input-output balance
sheet
nutrient_use_efficiency() - Comprehensive single-call
NUE report
Carbon Module (7 functions)
carbon_footprint() - Source-wise CF with IPCC AR6 GWP
defaults
carbon_efficiency() - Yield per kg CO2-eq
carbon_sustainability_index() - CSI with sequestration
offset
ghg_emission() - N2O/CH4/CO2 estimation (IPCC Tier
1)
soil_carbon_stock() - SOC stock (Mg C/ha)
carbon_sequestration_rate() - Annual SOC change
global_warming_potential() - GWP with AR6 values (100yr
and 20yr)
Nexus Integration (8
functions)
normalize_minmax() - Min-max 0-1 scaling with inverse
option
normalize_zscore() - Z-score standardization
nexus_index() - Weighted composite WEFNC index
nexus_tradeoff() - Correlation-based trade-off
matrix
nexus_radar() - Spider/web chart visualization
nexus_heatmap() - Treatment x dimension heatmap
nexus_sustainability_score() - Categorized
sustainability assessment
nexus_summary() - One-call complete nexus analysis from
raw data
Dataset
arid_pulse_nexus - 6 CA treatments x 26 variables from
western Rajasthan
Technical Notes
- GWP defaults updated to IPCC AR6: CH4 = 27, N2O = 273 (100-yr)
- India-specific grid electricity EF: 0.82 kg CO2/kWh (CEA 2023)
- All functions use
verbose = TRUE parameter (CRAN
compliant)
- All
@return tags present in documentation
- No
cat()/print() outside
if(verbose) blocks
- All examples executable (no
\dontrun)