search for: hassen62

Hi everybody, I'am very interested with the basic structural model of time series. So I used the command "StructTS" but I failed to obtain a desirable output, in fact when I write in R Console the following lines: > x=(1,2,3,4,5,2,25,14,12,13,11,6,9,24,12,13,14,12,12,14,11,12,14,15,20,21,22,23,21,25,28) >(fit <- StructTS(x,type = "BSM")) I obtained the following

Dear R users, I would like to simulate, for 20000 replications, an autoregressive process: y(t)=0.8*y(t-1)+e(t) where e(t) is i.i.d.(0,sigma*sigma), Thank you in advance ____________________________________________________ Écoutez gratuitement le nouveau single de Noir Désir et découvrez d'autres titres en affinité avec vos goûts musicaux

Dear R people, what functions generate respectively vectors with each element is respectively zero and one. sorry for my credulous questions and many thanks in advance. ____________________________________________________ Écoutez gratuitement le nouveau single de Noir Désir et découvrez d'autres titres en affinité avec vos goûts musicaux

Dear R users, I have the joined txt file in the following direct directory C:// I have written the following lines: library(urca); PIBTUN<-read.table("C:/AF.txt", header=F); ur.df(PIBTUN,type='none',lags=1) but I have obtained the following message: Error in embed(z, lags) : 'x' is not a vector or matrix I don't What's the problem, can you please help me Thank

Dear R users, I would like to construct a matrix of seasonal dummy variables, such matrix can be written as follows(i.e format(T,4)) 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 . . . . . . . . etc I have written the following small program:

Hi friends, I would like to construct a matrix of seasonal dummies with number of rows (observations)=100. such matrix is written as follows:[1 0 0 0;0 1 0 0;0 0 1 0;0 0 0 1;1 0 0 0;0 1 0 0;0 0 1 0;0 0 0 1;etc...] . I wrote the following program: T=100 br=matrix(0,T,4) { for (i in 1:T) for (j in 1:4) if i==j br[i,j]=1 if else (abs(i-j)%%4==0 br[i,j]=1 else br[i,j]=0 } z<-br z but

Hi, I'm a phd student of economics in Tunisia who is intersted now with the seasonal unit roots test of Canova and Hansen. So I've installed the package "uroot" in RGUI. I use R 2.4.0. The problem when I apply the function to my data, I've always a message from RConsole that it is impossible to find the function CH.test. Are there problems as for the use of this package?

Dear friends, I installed the package “uroot” then I wrote library (uroot) and I entered a series entitled extp, in spite of that the problem persite. In short,here are what I wrote and the message that I obtained: > library(uroot) > extp=c(1,3,10,14,12,5,8,12,13,15,9,8,7,10,9,7,3,10,3,11,12,7,4,9,8,10,20,17) > CH.test (wts=extp, frec=c(1,1), f0=1, DetTr=FALSE, ltrunc=NULL) Erreur dans

Hi friends, I have a file.xls entitled "Dali" which is composed of two columns: the first is entitled "imp" and the second is entitled:"exp". I putted The file "Dali" in the following way:C:/programfiles/R 2.4.0. I have used the following command:>Dali<-read.table("Dali.xls", header=T) but I can't read this file from R console. What can

Dear Rolf, thank you for reply, I am interested with non random numbers. To be more precise, I would like to obtain two vectors a and b with a=(1,1,1,......,1,1) and b=(0,0,........,0,0). The length of a and b is 10000. Thank you ____________________________________________________ Écoutez gratuitement le nouveau single de Noir Désir et découvrez d'autres titres en affinité avec vos goûts

Hi friends, I have a file.xls entitled "Dali" which is composed of two columns: the first is entitled "imp" and the second is entitled:"exp". I putted The file "Dali" in the following way:C:/programfiles/R 2.4.0. I can't read this file from R console. What can I do? thanks. [[alternative HTML version deleted]]

Hi friends, I have installed R 2.4.0 in my pc. I have a file xls entitled dali following this directory:c://programfiles//R 2.4.0. Recently I have installed xlsreadwrite 1.3.2. but , when I wrote the following lines: >library(xlsReadWrite) >read.xls( file, colNames = TRUE, sheet = 1, type = "data.frame", from = 1, colClasses = NA ) I obtained from R console the following messages:

Dear R users, I have the joined txt file in the following direct directory C:// I have written the following lines: library(urca); PIBTUN<-read.table("C:/AF.txt", header=F); ur.df(PIBTUN,type='none',lags=1) but I have obtained the following message: Error in embed(z, lags) : 'x' is not a vector or matrix I don't What's the problem, can you please help me Thank

Hi,Dear R users, I have a file text nommed "chif" which contains 16 lines and 4 columns in the disc dur. I have a difficulty to read this file in R console I have used the following command chif <- read.table("c:/chif.txt", header=T, sep=" ") I have obtained from R console:undefined file! Can you please help me.Thank you in advance. [[alternative HTML version