Re: [R] sem by variable x

2010-07-21 Thread Daniel Caro
Hi Jarret, Thank you for your answer. I get the following message: Error in cov(a.df[, 2:7], nrow(a.df)) : incompatible dimensions The function seems to run for some countries but then appears to stop when a country has incomplete data (1 var is missing, for example). How to force the function t

Re: [R] sem by variable x

2010-07-20 Thread Jarrett Byrnes
You may want to take a look at the lavaan package and use the multigroup analysis there (and see if you even need to group by country as well). Otherwise, you could do something like library(sem) library(plyr) cfa_func<-function(a.df){ cfa<-sem(ses.model, cov(a.df[,2:7], nrow(a.df)))

[R] sem by variable x

2010-07-20 Thread Daniel Caro
Hi R users, I am new in R. I would like to perform confirmatory factor analysis for a data set of countries. My data are: data <- read.csv("ses.raw", header = TRUE) attach(data) names(data) [1] "idcntry" "momed" "daded" "dadocu" "momocu" "hompos" "finan" The country id is "idcntry", my