Re: "object 'xset' not found"
Reply #1 –
I'm really not sure what you are trying to accomplish...
Seems like you are trying to do one subset at a time and merge with c. I don't see how that could help. XCMS does one file at a time anyway (unless using multithreading, nSlaves).
Forgetting the question of whether this makes sense if you don't want to keep all the data somewhere until after the loop you need to merge inside the loop. So something like when i=1 assign to xset. When it is not 1 assign to new_xset and do xset <- c(xset,new_xset).
1 GB is a lot for a data file. Are you sure it is in centroid mode?