search for: isabelle

...73 A -0.2445 0.0195 B -0.2910 -0.0036 D -0.03213 -0.016 E -0.18887 -0.0944 A:B 0.5672 0.1418 Can someone explain what happens with these fitting procedure. Thanks Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was scr...

...ot manage to achieve the end of my script due to memory lack. Of course, I've tried to remove all "temporary object" during the script execution and to perform a garbage collector ... But it seems to have no effect ... Any idea to solve this problem without an exit from R ? Regards Isabelle Isabelle Zabalza-Mezghani IFP - Reservoir Engineering Department Rueil Malmaison - France

...uot; end and I get: undefined method `validates_presence_of'' for #<Keyword:0xb774aba0> The only time it works is if I remove validate_on_create, but then I can no longer update existing entries that do not have a parent! this is driving me mad. please help. many thanks Isabelle -- Posted via http://www.ruby-forum.com/.

...expected : samp <- runif(10000,-1,1) plot(density(samp)) Instead of varying between -1 and 1, the density varies between approximaly -1.5 and 1.5 Could someone explain me what is happening ? Maybe some arguments for density estimation need to be set ? Waiting for an answer, Thanks in advance Isabelle. Isabelle Zabalza-Mezghani, PhD IFP - Research Reservoir Engineer

...ed as POSIXct or lt objects. I have the filling that both packages have been developped separately and I don't see how I could specify time to be able to plot regular and irregurlar time series on the same graph --- if it is possible in R--. Thanks in advance for your answer Best regards Isabelle -- Isabelle BRAUD Cemagref Unit? de recherche Hydrologie-Hydraulique 3bis quai Chauveau CP 220 69336 Lyon C?dex 9 Tel: 04 72 20 87 78 Fax: 04 78 47 78 75 E-mail: isabelle.braud at cemagref.fr

...t(fnscale=-1),method="L-BFGS-B")$par [1] 200.00000 60.00007 500.00000 300.00000 700.00000 Here the result I get is wrong, and in fact it is more or less the initial guess I 've set. Can someone explain me what is going wrong with the method "L-BFGS-B" Thanks in advance Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was scrub...

...,variables,varnames,extras,extranames, : invalid variable type. The same program without specifying weights runs. I don't understand this behavior since when I execute the glm command with weights out of the program, it runs. I run R1.3.0 under Windows. If someone can help me ... Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was sc...

...database-level authentication once, open one connection and reuse it until the user logs off. Is this possible with Rails? I thought maybe of using PGconn as described in: http://www.ruby-forum.com/topic/40078#7726 but that does look rather like a hack, or am I wrong? thanks for any feedback Isabelle -- Posted via http://www.ruby-forum.com/.

...to install the R111 version for few days on my PC (on Windows NT), and every time the same problem : I start the rwin.exe application and a couple of seconds later, the install failed, and my PC is down. I must then swich it down and restart a new session. If someone has some help ... Thanks -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch...

...Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 ---------- Forwarded message ---------- Date: Tue, 21 Aug 2001 15:47:34 +0100 (BST) From: Prof Brian Ripley <ripley@stats.ox.ac.uk> To: Isabelle ZABALZA <isabelle.zabalza-mezghani@ifp.fr> Subject: Re: [R] Problem using GLM in a loop It's a scope problem: use data$weights <- 1/sig and it will work. It's finding the system function weights, not your variable. I don't really understand this one as yet. On Tue, 21 Au...

...but a vector or a matrix (typically a spatial distribution of a physical property ... pressure). Is there any kind of approach to deal with that ? I don' t know to group cells together to dicrease the dimension of the problem ... I have no idea and I really need some help Thanks in advance Isabelle Isabelle Zabalza-Mezghani Institut Fran?ais du P?trole France

...to the Java behavior, or to the R application). In fact, I am interesting in re-starting new R sessions during a same Java session to manage memory problems in R with large datasets and numerous commands through SJava interface (just to "clean" memory). Waiting for your help, Regards, Isabelle. Isabelle Zabalza-Mezghani IFP - Reservoir Engineering Department Rueil-Malmaison / France Tel : +33 1 47 52 61 99

...proccess is performed just like if weights=NULL, even if my weights are not equals to 1. I've performed some return() command before this glm call to check the value of each argument, and everything seems OK. Please, help me to understand why the code bypass my weighting instruction. Regards Isabelle

...suitable for an output on screen, but it reveals bad as soon as I assign this function to an object (for ex: tmp <- fac.design( ....) ) since only the last command I performed (here print(attr(design,"fraction"))) is assigned to my object tmp. I hope someone can help me ... Regards, Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was scrubb...

...4.0 workstation. Can someone explain me ( in details please) the way to install this package. I've already read the doc relative to this topic, but I'm afraid to be too bad in Informatic to understand really well the install process. I hope someone has an answer for me Thanks in advance, Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Fran?ais du P?trole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -------------- next part -------------- An HTML attachment was scrubbe...

...w where I can find a Windows binary version of R 1.6.2, since I want to test the last SJava library (which has been built under 1.6.2) which does not work on R 1.7.1 I've already search on the CRAN web site but on the r1070 page, if I click on 'old', I get an error. Thanks in advance, Isabelle Isabelle Zabalza-Mezghani IFP - Reservoir Engineering Department Rueil-Malmaison, France

Dear Isabelle, for most of my work I have switched from S-Plus to R, because it is easier to make scripts with due to the better documentation and some other more reasonable implementations. And there was also a cost issue with the S-Plus Server, which is not for free at all. In R I use the its package for time...

...m2-m3. Does R use one of these process ? (I've already read the R documentation on this topic, and it is still not clear in my mind). Furthermore, how can I make prediction using this model, I mean how should I specify the new data (especially for m). Thanks in advance for your help Regards, Isabelle Zabalza-Mezghani -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help...

problem: validation error is not functionning in callback callback for many-to-many association: # keyword.rb :before_add => :reject_self_related def reject_self_related(related_keyword) if (related_keyword == self) # this does not work: errors.add(:name, "Relating a keyword to itself is forbidden!") raise "Relating a keyword to itself is

...negligeable in comparison with the intercept) and the R2 value is not equal to 1 (Multiple r2 = 0.72, and adj r2 = -0.187), although the residuals are near zero. I know, it is a very special case (regression is not necessary), but it is just to understand what is happening. Thank you in advance, Isabelle Zabalza-Mezghani -- Isabelle Zabalza-Mezghani Tel : 01 47 52 61 99 Institut Français du Pétrole E-mail : isabelle.zabalza-mezghani at ifp.fr 1-4 Av. Bois Preau - Bat Lauriers 92852 Rueil Malmaison Cedex, France -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....