Lognormal Model Class

class ecolopy_dev.models.lognormal_model.LognormalModel(community, **kwargs)

likelihood(theta)

get likelihood value of Ewens according to Parthy/Tetame (Jabot 2008)

Parameters:theta – value of theta Returns:likelihood

mu

mu

optimize()

Main function to optimize theta using theta likelihood function, according to Ewens model.

random_community(inds=None, mu=None, sd=None)

generates random lognormal distribution

Parameters:

• inds – number of individuals in community (J)
• sd – usually standard deviation of the distribution of abundances
• mu – usually mean of the distribution of abundances

Returns:

distribution of abundance (list)

sd

standard deviation