Saving and loading data in R

Saving and loading data in R


Last edit: mapar3 (13 Dec 2016 14:33) | Revisions: 2 | Created by: mapar3 | Rating: 0


This short page will help you get started with R. In particular, it will help you load and save your R scripts using the functions:

  • save()
  • load()

So, imagine you have now a short code that you have been working on (a reproducible example)

A<-matrix(c(1,2,3,4,5,6), nrow=3, ncol=2)
B<-c(7,8,9)
c<-cbind(A,B)
c

Now you get tired and want to continue another day. Then in order to save it you use the function save()

save(A,B,C, file="matrices.RData"))

Note that the second part of the function is the specification of the file name. This will save the 3 elements we selected (A,B,C) in a file called matrices, that can be loaded some other time again in R.

An alternative would be using save.image(), which saves the whole working space.

save.image(file="matricesall.RData")

In both cases the documents are saved in the directory you set for working at the beginning (with setwd() function)

You can safely close your R and whenever you want to continue working then you will use the function load()

load("~/matrices.RData")

Then you will have loaded all your elements again.

Hope this was useful and good luck starting with R.1


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