reading csv files in a for loop and assigning dataframe names [duplicate]

Answer 1

How about this :

for (i in c(1:numfiles)){  
    filenames[i] <- paste(".\\",filenames[i],sep="")  
    assign(gsub("[.]csv$","",filenames[i]),read.csv(filenames[i], header=FALSE))
}

Answer 2

Just to illustrate my comment :

for (i in filenames){  
   name <- gsub("-",".",i)
   name <- gsub(".csv","",name)  
   i <- paste(".\\",i,sep="")
   assign(name,read.csv(i, header=FALSE)
}

Or, to save all dataframes in a list :

All <- lapply(filenames,function(i){
    i <- paste(".\\",i,sep="")
    read.csv(i, header=FALSE)
})
filenames <- gsub("-",".",filenames)
names(All) <- gsub(".csv","",filenames)

I'd go for the second solution, as I like working with lists. It's less of a hassle to clean up the workspace afterwards. You also get rid of the name and i clutter in the global environment. These might cause some funny bugs later in the code if you're not careful. See also Is R's apply family more than syntactic sugar?