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#' @title Get the coefficients of a fitted SparseStep model
#'
#' @description Returns the coefficients of the SparseStep model.
#'
#' @param object a "sparsestep" object
#' @param ... further argument are ignored
#'
#' @return The coefficients of the SparseStep model (i.e. the betas). If the
#' model was fitted with an intercept this will be the first value in the
#' resulting vector.
#'
#' @export
#' @aliases coef
#'
#' @examples
#' x <- matrix(rnorm(100*20), 100, 20)
#' y <- rnorm(100)
#' fit <- sparsestep(x, y)
#' coef(fit)
#'
coef.sparsestep <- function(object, ...)
{
if (object$intercept) {
beta <- rbind(object$a0, object$beta)
} else {
beta <- object$beta
}
nbeta <- drop0(Matrix(as.matrix(beta)))
return(nbeta)
}
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