QPM Lab 1: Installing R and R Studio

Transcription

1 QPM Lab 1: Installing R and R Studio Department of Political Science Washington University, St. Louis September 1-2, 2016 QPM Lab 1: Installing R and R Studio 1

2 Introductions About me Your turn: Name Year Expectations for the class/lab QPM Lab 1: Installing R and R Studio 2

3 Rules and/or Suggestions Be ready to work hard; Come prepared (videos on the course website!) come with questions; Help each other out; Start homeworks early; Do not expect immediate answers (we will try to answer all of the questions via FB within 24 hours); Your feedback will be appreciated! QPM Lab 1: Installing R and R Studio 3

4 What is R? Data analysis software A programming language An open-source software A community of over 2 million users QPM Lab 1: Installing R and R Studio 4

5 Why should YOU care about R? It is free! It s expandable! You can contribute! You need it to analyze data in Lab sessions, homework assignments, and poster presentation. Google, Merck, Bank of America, Shell, NYT, and a lot of Fortune 500 companies use it. QPM Lab 1: Installing R and R Studio 5

6 What we will accomplish this Lab Session: Download and install R. Download and install R Studio. Perform basic operations using R: Simple aritmetic (R is your new calculator!) Assign a value to an object Install a package, call a library, browse over some functions QPM Lab 1: Installing R and R Studio 6

7 Installing R on your computer 1 Close any running applications on your computer. 2 To obtain R, go to The Comprehensive R Archive Network (CRAN) at 3 Click Download R. 4 Scroll down to the USA, choose CRAN Mirror United States, Washington University, St. Louis. 5 You will see versions of R for Linux, MacOS, and Windows. Download and install the version that corresponds to your operating system. 6 Warning for Windows users: You might want to be careful with your directory of download! QPM Lab 1: Installing R and R Studio 7

8 How should R look like? Figure : MacOS Figure : Windows QPM Lab 1: Installing R and R Studio 8

9 Installing R Studio on your computer R Studio allows the user to run R in a more user-friendly environment. It is open-source (i.e. free). To obtain R Studio, go to the following link: Click on Download RStudio Scroll down and choose your operating system (under the Installers block) QPM Lab 1: Installing R and R Studio 9

10 How should R Studio look like? QPM Lab 1: Installing R and R Studio 10

11 Using R & R Studio We are going to use R & R Studio in every Lab session. You are will need them to solve problems in the homework and lab sessions as well as execute your final project. R is currently installed in the Arts & Sciences Computing Lab, i.e. the computers in front of you. QPM Lab 1: Installing R and R Studio 11

12 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

13 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

14 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

15 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

16 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

17 Basic Operations with R Studio 1 Open R Studio. 2 Try adding, multiplying and dividing in your R Studio console. 3 Assign a value to an object. 4 Install a package by typing install.packages( package.name") to your console. An example: install.packages( foreign") 5 Call a package through its library by typing library(library.name) to your console. An example: library(foreign) 6 CRAN- package foreign will come handy when you read data into R next week! QPM Lab 1: Installing R and R Studio 12

18 References An introduction to R: An introduction to R Studio: QPM Lab 1: Installing R and R Studio 13