sad: METE species abundance distribution
In meteR: Fitting and Plotting Tools for the Maximum Entropy Theory of Ecology (METE)

Description Usage Arguments Details Value Author(s) References See Also Examples

sad.mete returns the species abundance distribution predicted by METE (Φ(n))

sad(x)

## S3 method for class 'meteESF'
sad(x)

`x`	an object of class mete.

See Examples.

An object of class meteDist. The object contains a list with the following elements.

data: The data used to construct the prediction
d: density funciton
p: cumulative density function
q: quantile funtion
r: random number generator
La: Vector of Lagrange multipliers
state.var: State variables used to constrain entropy maximization
type: Specifies the type of distribution is 'sad'

Andy Rominger <ajrominger@gmail.com>, Cory Merow

Harte, J. 2011. Maximum entropy and ecology: a theory of abundance, distribution, and energetics. Oxford University Press.

metePhi

data(arth)
esf1 <- meteESF(spp=arth$spp,
                abund=arth$count,
                power=arth$mass^(.75),
                minE=min(arth$mass^(.75)))
sad1 <- sad(esf1)
sad1
sad1$r(20)
sad1$q(seq(0,1,length=10))

Species abundance distribution predicted using raw data 
with parameters: 
      S0       N0       E0 
   76.00   547.00 15868.26 
    la1     la2 
0.03793 0.00496 
 [1] 22  2  1  1  4  1  2 10  1  1  1 39  1  3  5 10  4 10  2  4
 [1]   1   1   1   2   2   4   6   9  17 547