R Programming Fundamentals

Combining Matrices of Objects into Dataframes

Herein, we will use rbind() and cbind(), plus their associated data.frame methods, to combine multiple R objects into dataframes. In order to do so, the following steps have to be executed:

1. Create one, two, three, and four, which are all vectors of sequential numbers:

one <- 1:15 two <- 16:30 three <- 31:45 four <- 46:60 

2. Create all1 and all2 from one, two, three, and four. all1 should be combined by rows, while all2 should be combined by columns:

all1 <- rbind(one, two, three, four) all2 <- cbind(one, two, three, four) 

3. Check the class of all1:

class(all1)

4. Recombine one, two, three, and four into data.frames and look at the class of all3:

all3 <- rbind.data.frame(one, two, three, four) ...