R/compreg.R

In compositions: Compositional Data Analysis

if( FALSE ) {

complm <- function(formula,data,subset,weights,na.action,method="EM",
                   model=TRUE,x = FALSE, y = FALSE,
                   contrasts=NULL,offset,...
                   ) {
  ret.x <- x
  ret.y <- y
  cl <- match.call()
  mf <- match.call(expand.dots = FALSE)
  m <- match(c("formula", "data", "subset", "weights", "na.action", "offset"),
             names(mf), 0L)
  mf <- mf[c(1L, m)]
  mf$drop.unused.levels <- TRUE
  mf[[1L]] <- as.name("model.frame")
  mf <- eval(mf, parent.frame())
  if (method == "model.frame") 
    return(mf)
  else if (method != "qr" && method!="EM" && method!="project") 
    warning(gettextf("method = '%s' is not supported. Using 'qr'", 
                     method), domain = NA)
  mt <- attr(mf, "terms")
  y <- model.response(mf, "numeric")
  w <- as.vector(model.weights(mf))
  if (!is.null(w) && !is.numeric(w)) 
    stop("'weights' must be a numeric vector")
  offset <- as.vector(model.offset(mf))
  if (!is.null(offset)) {
    if (length(offset) == 1) 
      offset <- rep(offset, NROW(y))
    else if (length(offset) != NROW(y)) 
      stop(gettextf("number of offsets is %d, should equal %d (number of observations)", 
                    length(offset), NROW(y)), domain = NA)
  }
  if (is.empty.model(mt)) {
    x <- NULL
    z <- list(coefficients = if (is.matrix(y)) matrix(, 0, 
                3) else numeric(0), residuals = y, fitted.values = 0 * 
              y, weights = w, rank = 0L, df.residual = if (is.matrix(y)) nrow(y) else length(y))
    if (!is.null(offset)) {
      z$fitted.values <- offset
      z$residuals <- y - offset
    }
  } else {
    x <- model.matrix(mt, mf, contrasts)
    if( method == "qr" ) {
      z <- if (is.null(w)) 
        lm.fit(x, y, offset = offset, singular.ok = singular.ok, 
               ...)
      else lm.wfit(x, y, w, offset = offset, singular.ok = singular.ok, 
                   ...)
      
    } else if(method =="project") {
      
    } else if(method == "EM" || TRUE){
      
    } 
  }
  class(z) <- c("complm","mlm", "lm")
  z$na.action <- attr(mf, "na.action")
  z$offset <- offset
  z$contrasts <- attr(x, "contrasts")
  z$xlevels <- .getXlevels(mt, mf)
  z$call <- cl
  z$terms <- mt
  if (model) 
    z$model <- mf
  if (ret.x) 
    z$x <- x
  if (ret.y) 
    z$y <- y
  if (!qr) 
    z$qr <- NULL
  z

}
}