Vr/sbml jl lotka volterra

[vivekreddy049]

lotka_volterra_model done.. X indicates predator Y indicates prey check it out .. @TorkelE @paulflang

[paulflang]

I realize Lotka Volterra is a tricky example to map to a reaction network, cause you might have non-integer stoichiometries, i.e.

X + Y -> k * Y

where k is not necessarily an integer. To understand this, look up a Lotka Voltera Model in the internet and then reproduce the plot there in barebones Catalyst. Once this works, translate from Catalyst to SBML.jl (i.e. the code from this PR, but with the correct reaction equations). By splitting the process up in two steps, you reduce the complexity of the problem and thereby increase the chances of getting it right. 🙂