O'Reilly logo

Graphing Data with R by John Jay Hilfiger

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix H. R Functions Introduced in This Book

Here is a list of functions used in this book, for quick  reference. It is far from a complete list of R functions. For further information about a given function, x, see the index, or type help(x) or ?x.

Data Input/Output

load()
Reload an R dataset previously created by using save().
open.ncdf()
Open an .ncdf file (ncdf package).
Quandl()
Read a Quandl dataset (Quandl package).
read.csv()
Read a file in .csv format and create a data frame.
read.fwf()
Read a fixed-width file.
read.spss()
Read an SPSS dataset (foreign package).
read.table()
Read a file in table format and create a data frame.
read.txt()
Read a file in .txt format and create a data frame.
read.xport()
Read an SAS XPORT file (foreign package).
readWorksheetFromFile()
Read an Excel spreadsheet (XLConnect package).
save()
Write an R object to the working directory or a specified file.
xmlToDataFrame()
Read an XML file (XML package).

Datasets

attach()
Select a particular dataset for the following analysis.
data()
Determine what datasets are available (with no argument) or load a dataset.
data.frame()
Combine two or more vectors to make a new data frame.
detach()
Deselect a dataset; that is, following commands no longer analyze that dataset.
edit()
Edit a dataset.
fix()
Edit a dataset.
head()
View selected lines of a dataset, from the top.
str()
Determine the structure of an object.
subset()
Create a subset of a specified data frame.
tail()
View selected lines of ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required