Introduction à EcologicalNetworks

"$VERSION"

import Pkg

Pkg.activate(".")

Pkg.add("EcologicalNetworks")

using EcologicalNetworks

N = nz_stream_foodweb()[1]

typeof(N)

richness(N)

links(N)

fieldnames(typeof(N))

typeof(N.A)

species(N)

interactions(N)

Ns = nz_stream_foodweb()

#=

Long commentaire

=#

# façon 1: boucle

Ns_richness = zeros(Int64, length(Ns))

for i in 1:length(Ns)

  Ns_richness[i] = richness(Ns[i])

end

Ns_richness

# façon 2: meilleure boucle

for i in eachindex(Ns)

  Ns_richness[i] = richness(Ns[i])

end

# façon 3: aussi bonne boucle

for (i,N) in enumerate(Ns)

  Ns_richness[i] = richness(N)

end

# façon 4: boucle compacte 

Ns_richness = [richness(N) for N in Ns]

# façon 5: broadcast

sp_richness = richness.(Ns)

# façon 6: map

sp_richness = map(richness, Ns)

# façon 7: macro (bof)

@. sp_richness = richness(Ns)

nb_of_species = richness.(Ns)

nb_of_links = links.(Ns)

using Plots

scatter(nb_of_species, nb_of_links)

xaxis!("Nb of species")

yaxis!("Nb of links")