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hello, I created a package with my functions, and i wand to hide the code of some functions. Could you help me ? Gr?gory -------------------------------------------------------------- GAZ DE FRANCE Gr?gory Benmenzer DIRECTION DE LA RECHERCHE P?le Economie Statistiques et Sociologie 361 Avenue du pr?sident Wilson - BP 33 93211 La Plaine Saint Denis cedex tel : 01 49 22 55 07 fax : 01 49 22 57 10

Dear all, I'm looking for how can I estimate a linear model with ar(ma) errors : y(t)=a*X(t)+e(t) with P(B)e(t)=Q(B)u(t) where u is a white noise and P, Q are some polynomes. Could you help me ? Gr?gory Benmenzer

hello, you can use the persp() function. The shade=0.7 option is very nice. With matlab, it is possible to change of colors automaticalli with the value to be plotted. Does someone know to do that ? Gr?gory f0z6305 at labs.tamu.edu@stat.math.ethz.ch on 06/02/2003 07:05:04 Envoy? par : r-help-admin at stat.math.ethz.ch Pour : r-help at stat.math.ethz.ch cc : Objet : [R] About

HI, i have some prob when i try to use nls(). my data is 1D vector, I tried to use a polynomial function(order is 3) to fit it. the data series is stored in x. the a0, a1, a2, a3 below is coefficient, which i hope i can get from calls "nls" > z <- nls( ~ a0 + a1 * x + a2 * x * x + a3 * x * x * x, data = x ) Error in match.call(definition, call, expand.dots) : .Primitive... is