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...> minor 7.1 > year 2003 > month 06 > day 16 > language R > > > -- > Alberto G. Murta > Institute for Agriculture and Fisheries Research (INIAP-IPIMAR) > Av. Brasilia, 1449-006 Lisboa, Portugal | Phone: +351 > 213027062 Fax:+351 213015948 | > http://www.ipimar-iniap.ipimar.pt/pelagicos/ > > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz....

...atus major 1 minor 8.1 year 2003 month 11 day 21 language R -- Alberto G. Murta Institute for Agriculture and Fisheries Research (INIAP-IPIMAR) Av. Brasilia, 1449-006 Lisboa, Portugal | Phone: +351 213027062 Fax:+351 213015948 | http://ipimar-iniap.ipimar.pt/pelagicos/

Dear all I have tried to estimate the confidence intervals for predicted values of a nonlinear model fitted with nls. The function predict gives the predicted values and the lower and upper limits of the prediction, when the class of the object is lm or glm. When the object is derived from nls, the function predict (or predict.nls) gives only the predicted values. The se.fit and interval aguments

Hello, I am a new member, and I need your help. For my work (thesis), I use the package rpart to construct trees. But, to continu my studies, I need to calcule the 'variable importance'. But, I don't find a program to do this in the implementation of R. Is there someone who know if there exist a program which calculate the 'variable importance', notion defined by Breiman and

...sign"), qr = qrx, smooth = fit$s, nl.df = fit$df - 1, ) Any ideias? Thank you very much in advance, Marta PS: happy new year :-) -- ....................................................................... Marta M. Rufino (PhD) ..... Instituto Nacional de Investiga??o Agr?ria e das Pescas (INIAP/IPIMAR), Centro Regional de Investiga??o Pesqueira do Sul (CRIPSul) Avenida 5 de Outubro s/n P-8700-305 Olh?o, Portugal +351 289 700 541 ..... Institut de Ci?ncies del Mar - CMIMA (CSIC) Passeig Mar?tim de la Barceloneta, 37-49 08003 BARCELONA - Catalunya Spain

Dear R users, I want to share my joy with you. Please see the following excellent introduction to R "Statistiques avec R " by Vincent Zoonekynd http://zoonek2.free.fr/UNIX/48_R/all.html In paticular, you can see a lot of fascinating graphics examples of R from which you can get many hints. Soryy if this is already well-known, but the CRAN search did not show nothing with the keyword

Readers of this list might be interested in the following commenta about R. In a recent report, by Michael N. Mitchell http://www.ats.ucla.edu/stat/technicalreports/ says about R: "Perhaps the most notable exception to this discussion is R, a language for statistical computing and graphics. R is free to download under the terms of the GNU General Public License (see http://www.r-project.