expokit_itscale5_wrapper {rexpokit}

wrapper function for FORTRAN itscale5, for FD's maxent

Description

This function wraps the .C call to EXPOKIT for the itscale5 function.

Usage

  expokit_itscale5_wrapper(SXT, ngroups, ntraits, const, prior, 
    prob, entropy, niter, tol, denom)

Arguments

SXT

is a Groups (rows) X Traits (columns) matrix

ngroups

is an integer (nb: NJM's interpretation)

ntraits

is an integer (nb: NJM's interpretation)

const

is a vector of the constraint values (means, variances)

prior

is the prior distribution

prob

is the return vector of the maximum entropy

entropy

is the maximum entropy probabilities

niter

is the number of iterations required

tol

is the convergence tolerance value; tolerance is mean square difference

denom

are final moments

Details

The itscale5 function is in the "itscale5.f" FORTRAN file. itscale5 is used by the FD::maxent function.

The maxent function is used by BioGeoBEARS, merely to provide a simple method of putting flat or skewed probability distributions on the ordered categorical variable "size of smaller daughter range").

As the package FD has a number of other dependencies, some of which cause problems on some machines, I am just including maxent and itscale5 here, in order to avoid "dependency hell".

I am putting it in rexpokit rather than BioGeoBEARS, to make rexpokit the only package using FORTRAN code (which has a list of its own issues).

Value

res A list of outputs

Author(s)

Nicholas J. Matzke [e-mail]

See Also

maxent

Examples

# See maxent() function
test=1