Hi all, I'm using the try function for data import with read.csv function. I would like to know if there is a double allocation of memory when using this code test.t <- try(input1 <- read.csv("myfile.csv") ) compared to this one test.t <- try( read.csv("myfile.csv") ) I think for the first code, both test.t and input1 have the input data (when no error is raised). So I use twice the memory for the same dataset. But I look at the RAM memory used by R for these two code (in windows XP with process explorer), the first code seems to use less memory... which is counter intuitive. what is the truth? Thanks in advance Christophe PS : I'm using R 2.9.2 on win XP -- Christophe DUTANG Ph. D. student at ISFA [[alternative HTML version deleted]]