# fields, Tools for spatial data
# Copyright 2004-2007, Institute for Mathematics Applied Geosciences
# University Corporation for Atmospheric Research
# Licensed under the GPL -- www.gpl.org/licenses/gpl.html
"krig.image.parameters" <- function(out) {
    nt <- out$qr.T$rank
    n <- length(out$yM)
    delta <- qr.qy(out$qr.T, c(rep(0, nt), out$omega2))
    temp <- out$yM - (out$cov.function(out$indexM, , delta, cov.obj = out$cov.obj) + 
        out$lambda * out$weightsM * delta)
    beta <- qr.coef(out$qr.T, temp)
    rhohat <- sum(delta * out$yM)/(n - nt)
    rho <- rhohat
    sigma2 <- rho * out$lambda
    shat.MLE <- sqrt(rhohat * out$lambda)
    return(list(beta = beta, delta = delta, rhohat = rhohat, 
        rho = rho, sigma2 = sigma2, shat.MLE = shat.MLE))
}