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Hello I have the following problem : group the lines of a dataframe when no information change (Matricule, Nom, Sexe, DateNaissance, Contrat, Pays) and when the value of Debut of lines i = value Fin of lines i-1 I can obtain it with a do loop. Is it possible to avoid the loop ? The dataframe initial is df1 dput(df1) structure(list(Matricule = c(1L, 1L, 1L, 6L, 6L, 6L, 6L, 6L, 6L, 8L, 8L, 8L,

Dear all, this is my first post and I?m very new at R, I don?t know if somebody can help with an issue. I?m doing some exercices and I don?t know if for example I can convert this for in an operation with vectors: for (i in 2:n){ if (ES[i-1]==0 && sprd[i-1]>mediaSDP[i-1] && sprd[i]<=mediaSDP[i]) {ES[i] <- -1} else if((ES[i-1]==-1 || ES[i-1]==-15) &&

[Version fran??aise plus bas] To the R community, A quick word to announce the publication of my document "Introduction ?? la programmation en S". It is available in the French section of the Contributed Documentation page of CRAN. Many of the documents or books currently available on S-Plus and/or R present the software in a statistical analysis context. My document rather focuses

Hi, I'm using Kubuntu 'Jaunty' and wine-1.0.1 (.deb package provided by Kubuntu). I would like to learn how to type quickly on a keybord thanks to "Tap'Touche" (a French typewriting software) but it claims that some keys on the keybord are unavailable and so I could not do some exercices. The following lines appeared (duplicated lines removed) : Code:

Bonjour, Je suis d?sol? de poser ma question en fran?ais mais mon anglais n'est pas suffisamment correct pour le sujet que je veux aborder. Mon ?tablissement scolaire utilise un serveur de notes PRONOTE et chez moi j'ai install? un client sous Wine. La connexion au serveur se fait sans difficult?, je peux rentrer mes notes et j'ai acc?s ? tous les services propos?s par ce logiciel.

I have uploaded a new package to CRAN - SenSrivastava which contains the data sets for examples and exercices in the book (Springer Verlag) "Regression Analysis Theory, Methods and Applications." by A. Sen and M. Srivastava. Kjetil Halvorsen

Excuses I have a mistake in previous mail Type stats:::t.test.defaultThe formal way is to use getAnywhere(t.test) Justin BEM Elève Ingénieur Statisticien Economiste BP 294 Yaoundé. Tél (00237)9597295. ----- Message d'origine ---- De : justin bem <justin_bem@yahoo.fr> À : Weiwei Shi <helprhelp@gmail.com> Cc : R-help@stat.math.ethz.ch Envoyé le : Mardi, 12 Décembre 2006,

Of course SVM is for supervise learning method (classification or regression). You cannot use a boat to fly man !   Justin BEM BP 1917 Yaoundé Tél (237) 99597295 (237) 22040246 ________________________________ Envoyé le : Mardi, 5 Mai 2009, 16h07mn 10s Objet : Re : [R] Support Vector Machines Thank you. I will look this later but I think i've saw this function and i'm not sure

Hi, the second step in my exercice is to calculate the sum of the amout for each class et not the frequency i have this vector x           y 1          100 2          1500 3          3250 4          6250 5          2000 6           450 i want to use the function table and cat to calculate the sum of the amount in each class [0-1000], [1000-3000],[> 3000] Thank you for your help??

Madame , Monsieur, J'aimerais utiliser la fonction step dans une boucle "for" pour pouvoir prédire des valeurs (à chaque pas) suivant le modèle proposé par step. Est-il possible de le faire ? Merci d'avance, Cordialement Athanasia

I am trying to get a SPA-3000 to work behind NAT - for the sake of the exercice. The SPA is on the local network at the address 192.168.0.125 behind a NATted linux router. The machine I am trying to work with is a friend's (let's call it lolo.dyndns.org) and I've installed Asterisk 1.0.3 on it. I can see the SPA register but when I try to make an outbound call I get the message:

Hello. I am interested in developing a web application in a collaborative way with three or more web developers. Application itself should be short, to develop quickly. For example, two weeks maximum. It would be interesting to meet with the problems we find in the real world. If anyone is interested we can talk about and define the application features. It would be interesting to make a

Hi all I try to make a weibull survival analysis on R. I know make this on GLIM, and now I try to make the GLIM exercice GLEX8 on R to learning and compare the test. The variables are: time censor group bodymass In GLIM I make: $calc %s=1 $ to fit weibull rather than exponential $input %pcl weibull $ $macro model group*bodymass $endmac$ $use weibull t w %s $ Then, GLIM estimate an alpha for the

Hello, As an exercice, I installed sipp on the same box as a Asterisk 11.4 instance (to keep network equipements out of the equation). I'm focusing on the maximum number of new calls this Asterisk instance can deal with. Here is the dialplan (AEL) I'm playing with: _X. => { Verbose(0,Incoming call from ${CALLERID(num)} to ${EXTEN} in ${CONTEXT} - case A);

Hi, My name is Curtis and I'm a 1st year student in Biochemistry at the University of Geneva. I need some help completing the code for my NEWTON ALGORITHM. It is a bonus exercice to our autumn semester maths exam and we can hand it in or not. Usually people copy and paste but I decided to sit down and review theory and ask for help left right and center. My problem is that I cannot get my

Hi dear R-helpers, Happy new year. I have estimated Gini index variance in the case of complex survey (stratify and with two stage sampling). I use the survey package. I use replication (bootstrap, and Jacknife) and linearisation according to Binder (1993) article David A. Binder and Milorad Kovaˇcevi´c(1993), « Estimating some measures of income inequality from survey data : An

Is there a function to fit heckman probit model in R ? Sincerly.. Justin BEM BP 1917 Yaoundé Tél (237) 76043774 [[alternative HTML version deleted]]

For the first question x'(y-bx)<>0 or Cov(Ui,Xi)<>0 you have heterogeinity problem ! OLS estimator in this case in biased. The bias is equal to (Exx')^{-1}Exu You obtain obtain correct estimator by use instrumental variable or 2SLS ... Justin BEM Elève Ingénieur Statisticien Economiste BP 294 Yaoundé. Tél (00237)9597295. ----- Message d'origine ---- De

see nlm or optim Justin BEM Elève Ingénieur Statisticien Economiste BP 294 Yaoundé. Tél (00237)9597295. ----- Message d'origine ---- De : Wayne Delport <wdelport@botzoo.uct.ac.za> À : r-help@stat.math.ethz.ch Envoyé le : Vendredi, 8 Décembre 2006, 8h27mn 44s Objet : [R] formula format for parameter estimation Hello, I am trying to input the following formula into R for parameter

May be you are also not familiar with statistic. the solution of min \sum_{i=1}^{n} (y_{i}-b)^{2} is the mean. So the solution is b<-mean(y) Justin BEM Elève Ingénieur Statisticien Economiste BP 294 Yaoundé. Tél (00237)9597295. ----- Message d'origine ---- De : Kåre Edvardsen <ked@nilu.no> À : R-help <r-help@stat.math.ethz.ch> Envoyé le : Vendredi, 8 Décembre 2006,