We have seen different data structures in R. Now let’s see some useful functions for working with these data objects.
| Functions | Purpose |
length(x) |
Number of elements/components. |
dim(x) |
Dimensions of x. |
str(x) |
Structure of x. |
class(x) |
Class or type of x. |
mode(x) |
How x is stored. |
names(x) |
Names of components in x. |
c(x1, x2,...) |
Combines x1,x2 into a vector. |
cbind(x1, x2, ...) |
Combines x1,x2 as columns. |
rbind(x1, x2, ...) |
Combines x1,x2 as rows. |
x |
Prints the x. |
head(x) |
Lists the first part of the x. |
tail(x) |
Lists the last part of the x. |
ls() |
Lists current objects. |
rm(x1, x2, ...) |
Deletes one or more objects. The statement rm(list = ls()) will remove most objects from the working environment. |
y <- edit(x) |
Edits x and saves as y. |
fix(x) |
Edits in place. |
If I have missed any functions, Let me know in the comment section below.
