DataCamp R Course

Data Type Conversion

Type conversions in R work as you would expect. For example, adding a character string to a numeric vector converts all the elements in the vector to character.

Use is.foo to test for data type foo. Returns TRUE or FALSE
Use as.foo to explicitly convert it.

is.numeric(), is.character(), is.vector(), is.matrix(), is.data.frame()
as.numeric(), as.character(), as.vector(), as.matrix(), as.data.frame)

Examples

  to one long
vector
to
matrix
to
data frame
from
vector
c(x,y)
cbind(x,y)
rbind(x,y)
data.frame(x,y)
from
matrix
as.vector(mymatrix)   as.data.frame(mymatrix)
from
data frame
  as.matrix(myframe)  

Dates

You can convert dates to and from character or numeric data. See date values for more information.

To Practice

To explore data types in R, try this free interactive introduction to R course.