Getting started

GrasslandTraitSim.jl is a Julia package for simulating plant dynamics in managed grasslands.

Author: Felix Nößler.

Licence: GPL-3.0

Please contact me if you have any questions about using the model or if you would like to collaborate. You can write my an email or open an issue on Github.

Installation

1. Download Julia.

2. Launch Julia and type

import Pkg
Pkg.add("GrasslandTraitSim")

For the tutorials you will also need several other Julia packages:

Pkg.add(["CairoMakie", "GLMakie", "Unitful", "Statistics", "DimensionalData"])

Run simulations

For more details, see the tutorials on preparing inputs and analysing outputs.

import GrasslandTraitSim as sim

trait_input = sim.input_traits();
input_obj = sim.validation_input("HEG01");
p = sim.SimulationParameter();
sol = sim.solve_prob(; input_obj, p, trait_input);
sol.output.biomass

╭──────────────────────────────────────────────────────────────────────────────╮
│ 6210×1×1×70 DimArray{Unitful.Quantity{Float64, 𝐌 𝐋^-2, Unitful.FreeUnits{(ha^-1, kg), 𝐌 𝐋^-2, nothing}},4} state_biomass │
├──────────────────────────────────────────────────────────────────────── dims ┤
  ↓ time    Sampled{Dates.Date} Dates.Date("2006-01-01"):Dates.Day(1):Dates.Date("2023-01-01") ForwardOrdered Regular Points,
  → x       Sampled{Int64} 1:1 ForwardOrdered Regular Points,
  ↗ y       Sampled{Int64} 1:1 ForwardOrdered Regular Points,
  ⬔ species Sampled{Int64} 1:70 ForwardOrdered Regular Points
└──────────────────────────────────────────────────────────────────────────────┘
[:, :, 1, 1]
 ↓ →                                   1
  2006-01-01    71.4286 kg ha^-1
  2006-01-02    71.3345 kg ha^-1
  2006-01-03    71.2406 kg ha^-1
 ⋮                    
  2022-12-29  0.0954842 kg ha^-1
  2022-12-30  0.0952987 kg ha^-1
  2022-12-31  0.0951226 kg ha^-1
  2023-01-01  0.0949421 kg ha^-1