Hi, I have been using R for a bit, but never came across this simple
issue... So, I wonder if anyone could give me a hint on it.
I have calculated a bunch o models and now need to compare them using
AIC(). The issue seem to be that I have placed each output in a list object.
So, the question is how to convert a string into variable names.
Lets say I have all my models in a variables called : models and would like
to compare them using AIC(models[[1]],models[[2]], models[[2]], ...) ? (I
need the list of such output!)
I can get a vector of strings using
paste("models[[",1:length(models),"]]",sep="") but i don't seem to succeed
converting them into variable names...
I tried: AIC(paste("models[[",1:length(models),"]]",sep=""))
and get the following error:
Error in UseMethod("logLik") : no applicable method for "logLik"
Any hint would be appreciated!
Thanks,
H
## I generate my models using the following function ###
regPares <- function(data=LR){
nVars <- ncol(data);
dv <- names(data)[1];
modelos <- list();
for (i in 2:(nVars-1)){
for (j in (i+1):nVars){
# get variable names
var1 <- names(data)[i];
var2 <- names(data)[j];
# 1) get all pairs and
ivs <- paste(var1,var2,sep=" + ");
model.name <- paste("model",i,j,sep=".");
model <- paste(dv,ivs,sep=" ~ ");
# print(modName);
modelos[[model.name]] <- lm(as.formula(model),data=data);
}
}
# return all models in a list()
return(modelos)
}
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