search for: mezghani

Displaying 20 results from an estimated 24 matches for "mezghani".

2000 Oct 26
2
Problem with lm
...-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 scrubbed... URL: htt...
2000 Oct 16
2
Crash while R111 install
...11 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/pipermail/r-help...
2003 Sep 24
3
Problem with memory for large datasets
...d 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
2001 Aug 21
2
Problem using GLM in a loop
...es,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 scrubbed... URL: ht...
2003 Apr 08
3
density ranges for uniform law
...(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
2001 Nov 08
3
Problem with optim (method L-BFGS-B)
...hod="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 scrubbed... URL: https...
2000 Oct 19
2
Multiple outputs of a function
...utput 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 scrubbed... URL: https:...
2001 Jan 10
1
Package Java for R
...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 scrubbed... URL: https:/...
2001 Aug 21
0
Re: [R] Problem using GLM in a loop (fwd)
...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 Aug 2001, Isabelle ZABALZA wrote: >...
2002 Nov 07
2
Qualitative factors
...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-request at stat....
2003 May 13
1
Dopt for Windows
Hi, I would like to have some advise about how to install Dopt on R for Windows. I can not manage to properly compile Dopt.f anf to get a suitable dll for R. Can someone explain me step by step what should I do ? Thanks in advance Isabelle Zabalza-Mezghani
2003 Jun 27
1
A vector or matrix response
...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
2003 Sep 19
1
predict for mlm does not work properly
...n as I invoke the predict method for a dataframe "newdata", the methods runs and give me back prediction at the fitting points but not for newdata. Does someone has an explanation for this behavior, and some ideas to make predict.mlm work efficiently. Thanks in advance Isabelle Zabalza-Mezghani IFP-Reservoir Engineering Department Rueil-Malmaison - France
2003 Oct 16
2
Managing memory on R
..., but during my study, some results are temporary, and I would like to get back the memory allocated to this temporary object as soon as I remove them. But, as I 've said the garbage collector seems to have no effect on my memory management. Please, I wait for help, Regards, Isabelle Zabalza-Mezghani
2003 Oct 27
1
Starting and Terminating the JVM for package SJava
...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
2000 Nov 13
1
DLL for calling Fortran subroutines
...re, when I try to execute the R function which calls Fortran("functest",...) I've got the following message : "Error in .Fortran("functest",...) : C/Fortran function name not in load table". If someone has a solution to this problem .... Thanks 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-request at sta...
2002 Oct 25
1
Problem when fitting a constant response
...omparison 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 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help...
2003 Sep 24
1
R binary version for 1.6.2
...s 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
2004 Jun 23
1
How to define stopping criterium for Optim with L-BFGS-B
...n equal to 1. I wonder if there is any way to pass this info to "optim". If not, how "factr" argument works (I am quite confused about the relationship between this argument and the Machine eps). Please, could someone give me an example ? Thanks in advance Isabelle. I Zabalza-Mezghani IFP - France __________________________ Ce message (et toutes ses pi??ces jointes ??ventuelles) est confidentiel et ??tabli ?? l'intention exclusive de ses destinataires. Toute utilisation de ce message non conforme ?? sa destination, toute diffusion ou toute publication, totale ou partielle,...
2003 Feb 17
2
Call to glm inside a function
Hello, I want to call glm inside a function. In the first lines of code I build the weights, the formula, ... and then I call glm with the following command: glm(formularesp, data=data, family=familyresp, weights=eval(data$weights) My problem is that the fitting proccess is performed just like if weights=NULL, even if my weights are not equals to 1. I've performed some return() command