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...same estimate of the parameter (equal to the simulated one) but, instead, i obtain different results (the likelihood function shouldn't be flat). Does anybody has experience with the optimize procedure? Thanks in advance, Chiara Chiara Seghieri Dipartimento di Scienze Statistiche "G.Parenti" V.le Morgagni, 59 50134 Firenze, Italy tel.: +39 055 4237230 fax: +39 055 4223560

I have a matrix 2900X2900 and I have to solve it. But R says that it can't allocate 67899kb. How can I do? Appreciate your kindly help! Salvati Nicola Dipartimento di Statistica "G.Parenti" salvati@ds.unifi.it tel. 055.4237.224 fax 055.4223560 [[alternative HTML version deleted]]

...m: I have selected an lm model through the step procedure which visualize for each step the AIC value; then I have calculated for the initial model and the selected one the AIC using the funnction AIC. The results are different.What's happened? Emilia Rocco Dipartimento di Statistica "G. Parenti" Università di Firenze e-mail: rocco@ds.unifi.it [[alternative HTML version deleted]]

...cess. This usually does not happen at the beginning of the session. The problem seems to arise when the system opens the dialog window to choose the directory and file name. (R version 2.6.1 under Windows XP) Thank you all Giovanni -- Giovanni M. Marchetti Dipartimento di Statistica, "G. Parenti", University of Florence viale Morgagni, 59 Phone: +39 055 4237 261 I 50134 Firenze, Italy Fax: +39 055 4223 560 [[alternative HTML version deleted]]

...r Italy but I couldn't find how to plot more than one level boundary in the same map.// // I have shapefile both for regions and provinces in Italy and I tried to use the "maptool" and "maps" packages without success. Thank you in advance for any help. Best regards, Angela Parenti/ / [[alternative HTML version deleted]]

If the associated object of a has_one association has been loaded, it is resaved when the parent is saved. Eg: class Person < ActiveRecord::Base has_one :user end class User < ActiveRecord::Base belongs_to :person end p = Person.find(:first) p.save # As expected, nothing happens with the user association p.user # Loads the associated object p.save # As well as saving the person, the