Re: [R-sig-Geo] Maximizing likelihood function

2015-03-24 Thread Baldwin, Jim -FS
It sounds like the function .negloglik.boxcox is being fed some parameters it doesn't like (and possibly it doesn't like the starting values). Possibly attempting to divide by zero. So I would first check .negloglik.boxcox with the starting values to see if something other than infinity comes

[R-sig-Geo] Maximizing likelihood function

2015-03-24 Thread Jimmy Neutrón
Dear comRades: I'm working with the variogram "mattern". Then, I tried to run this function many times to achieve the best parameters for my geodata function (XXSelg) by means of likfit, then I wrote: likfit(XXSelg, cov.model="matern", ini.cov.pars=c(4.0, 1.8), kappa=3.5, fix.kappa=FALSE, nugget

[R-sig-Geo] Maximizing likelihood function

2015-03-24 Thread Jimmy Neutrón
Dear comRades: I'm working with the variogram "mattern". Then, I tried to run this function many times to achieve the best parameters for my geodata function (XXSelg) by means of likfit, then I wrote: likfit(XXSelg, cov.model="matern", ini.cov.pars=c(4.0, 1.8), kappa=3.5, fix.kappa=FALSE, nugget