How to Create a Data Frame in R

The data.frame function in R lets you create a data frame with a collection of vectors of the same length.

Code used in this clip:


Data to convert into a data frame

students = c("Bill", "Emma", "Edward", "Sophia")
homework = c(80, 100, 95, 90)
midterm = c(75, 95, 90, 85)
final = c(70, 95, 85, 90)
g = c("C", "A", "A-", "B+")

Create data frame with data.frame()
student_frame = data.frame(students,
homework,
midterm,
final,
grade = g)

str(student_frame)

Keep strings as characters
student_frame = data.frame(students,
midterm,
final,
grade = g,
stringsAsFactors=F)

str(student_frame)



Code Clips are basic code explanations in 2 minutes or less. They are intended to be short reference guides that provide quick breakdowns and copy/paste access to code needed to accomplish common data science tasks. Think Stack Overflow with a video explanation.


* Note: YouTube does not allow greater than or less than symbols in the text description, so the code above will not be exactly the same as the code shown in the video! For R that means I may use = for assignment and the special Unicode large ＜ and ＞ symbols in place of the standard sized ones for dplyr pipes and comparisons. These special symbols should work as expected for R code on Windows, but may need to be replaced with standard greater than and less than symbols for other operating systems.