## Copyright (C) 2008 Olaf Till
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

function ret = Rlm (robj, y, x, ylabel, xlabels, Rmodel, alpha)

  ## ret = Rlm (robj, y, x, ylabel, xlabels, Rmodel, alpha)

  y = y(:);
  if (isvector (x))
    x = x(:);
  endif
  nc = size (x, 2);
  Rput (robj, cat (2, y, x), "lindata", \
	cat (2, {{ylabel}{:}}, {xlabels{:}}));
  Rprintf (robj, "linmod <- lm (%s, lindata);\n", Rmodel);
  Rdisp (robj, 1, "confint (linmod, level = %.16e)", 1 - alpha);
  Rdisp (robj, 0, "coefficients (linmod)");
  Rprintf (robj, "library (car)\n");
  Rdisp (robj, 0, "linear.hypothesis (linmod, c (0, 1))$Pr[2]");
  Rflushin (robj);
  ret = Rget (robj, 1, nc, 2);
  ret.coeffs = Rget (robj, 0, nc + 1, 1); % is only a special case!!
  ret.alpha = Rget (robj, 0, 1, 1);
endfunction