In frank113/cmu202: Necessary Packages and Data for 36-202 at Carnegie Mellon University

library(cmu202)
library(ggplot2)

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.align = "center",
  warning = FALSE,
  message = FALSE,
  echo = TRUE,
  eval=FALSE,
  fig.width = 7,
  height = 6
)

Viewing Data

View

When you have a dataframe (an entry under the "data" tab of "environment"), you may view it in an excel-like format by running the following code:

View(data_name)

Note that this command is never to be run in an .Rmd or .R file, only in the terminal.

Head

The head() function allows one to see the first 6 rows of data. It is called with:

# Load the data for the example
library(cmu202)
data("airlines")

head(airlines)

Tail

The tail() function allows one to see the last six rows of data. It is called with:

# Load the data for the example
library(cmu202)
data("airlines")

tail(airlines)

frank113/cmu202 documentation built on July 17, 2020, 9:31 p.m.