What is the difference among an array, a dataframe and a matrix? Why is the size of a dataframe so much larger? (see example below)
a<-c(rep(1:1000000,1)) b<-c(rep(1:1000000,1)) c1<-cbind(a,b) cdf<-as.data.frame(cbind(a,b)) cm<-as.matrix(cbind(a,b)) object.size(a)/1000000 object.size(b)/1000000 object.size(c1)/1000000 object.size(cdf)/1000000 object.size(cm)/1000000 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
