Hi all, I have two *.RData objects saveds in different time. They do have the same number of columns but different number of rows. I was trying to load and compare the two files by the first columns but face problem. t1=load(file="dat.RData") t2=load(file="dat256.RData") Error: object 'dat256' not found How do I fix this one and compare the two files? thank you in advance