Thanks very much ----- Mario Garrido Escudero PhD student Dpto. de Biología Animal, Ecología, Parasitología, Edafología y Qca. Agrícola Universidad de Salamanca -- View this message in context: http://r.789695.n4.nabble.com/problems-with-glht-for-ancova-tp4284908p4288227.html Sent from the R help mailing list archive at Nabble.com.