# fields, Tools for spatial data
# Copyright 2004-2011, Institute for Mathematics Applied Geosciences
# University Corporation for Atmospheric Research
# Licensed under the GPL -- www.gpl.org/licenses/gpl.html
"print.sreg" <- function(x, ...) {
    if (length(x$lambda) > 1) {
        c1 <- "Number of Observations:"
        c2 <- (x$N)
        c1 <- c(c1, "Number of values of lambda in grid:")
        c2 <- c(c2, length(x$lambda))
        sum <- cbind(c1, c2)
    }
    else {
        digits <- 4
        N <- x$N
        c1 <- "Number of Observations:"
        c2 <- (x$N)
        c1 <- c(c1, "Unique Observations:")
        c2 <- c(c2, length(x$xM))
        c1 <- c(c1, "Effective degrees of freedom:")
        c2 <- c(c2, format(round(x$trace, 1)))
        c1 <- c(c1, "Residual degrees of freedom:")
        c2 <- c(c2, format(round(x$N - x$trace, 1)))
        c1 <- c(c1, "Residual root mean square:")
        c2 <- c(c2, format(signif(sqrt(sum(x$residuals^2)/N), 
            4)))
        c1 <- c(c1, "Lambda ( smoothing parameter)")
        c2 <- c(c2, format(signif((x$lambda), 4)))
        sum <- cbind(c1, c2)
    }
    dimnames(sum) <- list(rep("", dim(sum)[1]), rep("", dim(sum)[2]))
    cat("Call:\n")
    dput(x$call)
    print(sum, quote = FALSE)
    invisible(x)
}