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Expand a shape-and-ratio sweep into absolute ForCS parameters

growth_factorial_ratio_grid.Rd

The sweep is specified as growth shape, mortality shape, and anpp_prop – anpp_max as a percentage of biomass_max, the same ratio that PredictiveEcology/Biomass_speciesFactorial sweeps as mANPPproportion.

Usage

growth_factorial_ratio_grid(grid, growth_params)

Arguments

grid

A tibble with species and any of growth_shp, mort_shp, anpp_prop. One row per candidate value per parameter per species.

growth_params

A data frame of the parameters currently in use; see growth_calibration_design().

Value

A grid in the absolute form growth_calibration_design() expects.

Details

biomass_max is NOT swept. It is pinned to each species' current calibrated value and the level a candidate implies is recovered arithmetically instead; see growth_inflation_factor(). Sweeping it alongside the shapes made the two inseparable: many (shape, level) pairs produce near-identical curves, so the score traded them off arbitrarily and settled wherever the reference cloud's centre happened to sit.

Pinning per species rather than at one global constant – LandR uses 5000 for every species – keeps every simulation inside the range over which the achieved-fraction invariance was actually checked here. biomass_max spans 18200 to 48028 across these six species, so a single constant would put some of them far outside it.

See also

Other growth calibration helpers: extract_landscape_cohort_structures(), growth_add_objective(), growth_auto_window(), growth_best_candidates(), growth_bin_observations(), growth_calibration_design(), growth_calibration_partition(), growth_calibration_work_root(), growth_climatic_distance(), growth_climatic_weight(), growth_expand_over_pseudo_species(), growth_fitting_windows(), growth_identifiability(), growth_inflation_factor(), growth_mortality_onset_frac(), growth_plot_palette(), growth_pseudo_species_name(), growth_reference_curves(), growth_reference_inflection(), growth_score_fit(), growth_scoring_for(), growth_smooth_observations(), growth_structure_cell_curves(), growth_structure_cohort_table(), growth_structure_design(), growth_structure_summary(), growth_window_for(), plot_growth_calibration(), plot_growth_candidate(), plot_growth_factorial_sensitivity(), plot_growth_structures(), read_growth_scoring(), read_landscape_cohort_structures(), scale_linetype_growth_reference(), write_growth_review_bundle()