similar to: Re : How to import package into R script

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Team, I am trying to resolve the self-selection bias of a sample in an experiment and would like to run the Heckman Correction Estimation using R. Can someone help me with the R-Code... I tried searching for the discussion, but not successful. Thanks in advance, Best, Kishore/.. http://kaykayatisb.blogspot.com [[alternative HTML version deleted]]

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Have the counter function in R ? if we use the software SAS /*** SAS Code **************************/ data tmp(drop= i); retain seed x 0; do i = 1 to 5; call ranuni(seed,x); output; end; run; data new; counter=_n_; ***** this keyword _n_ ****; set tmp; run; /* _n_ (Automatic variables) are created automatically by the DATA step or by DATA step statements. */ /*** Output

Dear all, Currently I have the following output > mydensity <- density(x) > print(mydensity) x y Min. : -92.14 Min. :0.000e+00 1st Qu.: 356.66 1st Qu.:5.530e-09 Median : 805.45 Median :4.681e-05 Mean : 805.45 Mean :5.564e-04 3rd Qu.:1254.24 3rd Qu.:3.370e-04 Max. :1703.04 Max. :5.541e-03 How can I access the Max value of

dear all, I get internet via a proxy server when I try to downlaod package it always fail. Even when i add and environnment variable for the http proxy server. I use windows XP SP2 Sincerly Justin BEM El?ve Ing?nieur Statisticien Economiste BP 294 Yaound?. T?l (00237)9597295.

Does anyone know if there is a package or other method of reading Genstat files directly into R. Genstat isn't listed in the foreign package. Many thanks, Graham [[alternative HTML version deleted]]

Hi, I have this string, in which I want to extract some of it's element: > x <- "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL= -963.669 -965.35" yielding this array [1] "211952_at" "RANBP5" "2" In Perl we would do it this way: __BEGIN__ my @needed =(); my $str = "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL= -963.669

Hi I have write A function to draw pyramid of age. I have two function draw.pyramide(h,f,l) , pyramide(h,f,l) and a data frame with data. I first use package.skeleton("pyra") I got the package structure Then in my shell I use > RCMD build pyra I get this : check for description ... OK .... removing junk files but "cannot open

Run outfit<-nlm(..., hessian=T) and then standards error are se<-diag(solve(outfit$hessian))   Justin BEM BP 1917 Yaoundé Tél (237) 76043774   ________________________________ De : Bomee Park <bombom@stanford.edu> À : r-help@r-project.org Envoyé le : Jeudi, 29 Janvier 2009, 4h01mn 56s Objet : [R] standard error of logit parameters Hi everyone. I am now estimating the

Hi, I have two histograms created separately using the following code. It creates two separate figures. dat <- read.table(file="GDS1096.modelout", head = FALSE ) __BEGIN__ dat <- read.table(file="GDS1096.modelout", head = FALSE ) hist(dat$V2, main="AIC Freq", xlab = "\# Component", breaks = 36, xlim = c(0,max(dat$V2)), col = "dark red",

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Dear R users, I have a table with the following form STATION X Y 1 -70 30 1 -70 30 1 -70 30 2 -72 29 2 -72 29 2 -72 29 2 -72 29 How want to extract unique value for those columns ... I am sure it is very simple, but I can not achieve to find the correct way ! I want to obtain something like STATION X Y 1

I would like to estimate the sigma matrix of multinormal distribution through ML. But I don't know how to optimize the parameter sigma. Could any one help me? Thank you so much~ Yen Lee

*How can I do a t-test with survey data?* Thanks. Marie -- --------------------------------------------------------------------- Le Bureau f?d?ral du Plan f?te ses 50 ans en 2009. Het Federaal Planbureau viert zijn 50-ste verjaardag in 2009. The Federal Planning Bureau celebrates its 50-th anniversary in 2009. ---------------------------------------------------------------------