an introduction to r
play

An introduction to R S. Manzi & A. Salmon South West Peninsula - PowerPoint PPT Presentation

May 17, 2023 •114 likes •374 views

An introduction to R An introduction to R S. Manzi & A. Salmon South West Peninsula Collaboration for Leadership in Applied Health Research and Care (PenCLAHRC) University of Exeter January 2019 An introduction to R Outline 1 Aims and

  1. An introduction to R An introduction to R S. Manzi & A. Salmon South West Peninsula Collaboration for Leadership in Applied Health Research and Care (PenCLAHRC) University of Exeter January 2019

  2. An introduction to R Outline 1 Aims and topics of the training Aims of the training Training topics – Introduction Training topics – Core R functionality Training topics – Data visualisation and statistics 2 Introduction Installing R and R studio Windows installation Linux installation The power and limitations of R Familiarisation with the R studio environment Setting the working directory Packages for the extension of R functionality R conventions

  3. An introduction to R Aims and topics of the training Outline 1 Aims and topics of the training Aims of the training Training topics – Introduction Training topics – Core R functionality Training topics – Data visualisation and statistics 2 Introduction Installing R and R studio Windows installation Linux installation The power and limitations of R Familiarisation with the R studio environment Setting the working directory Packages for the extension of R functionality R conventions

  4. An introduction to R Aims and topics of the training Aims of the training Aims of this training To familarise you with purpose and use of R and R studio To provide you with an understanding of the basic data structures and functionality of R To provide you with the skills to produce data visualisations in R To introduce the use of packages for extending the functionality of R

  5. An introduction to R Aims and topics of the training Training topics – Introduction Training topics – Introduction Introduction Installation of R and R studio The power and limitations of R Familiarisation with the R studio environment Packages for the extension of R functionality The R language

  6. An introduction to R Aims and topics of the training Training topics – Core R functionality Training topics – Core R functionality Core R functionality and skills Sequence generation and replication Variable types and conversion Data structures and conversion Vector arithmatic Identifying unique values Array sizes String concatenation and splitting Conditional logic and functions Reading from and writing to files Subscripting and subsetting Merging and appending data Sorting data Date and time data handling Tablulation Loops and the apply based functions User defined functions

  7. An introduction to R Aims and topics of the training Training topics – Data visualisation and statistics Data visualisation and statistics Plotting Scatter and line graphs Histograms Bar charts Statistical process control charts Statistics Descriptive statistics T-tests Linear regression

  8. An introduction to R Introduction Outline 1 Aims and topics of the training Aims of the training Training topics – Introduction Training topics – Core R functionality Training topics – Data visualisation and statistics 2 Introduction Installing R and R studio Windows installation Linux installation The power and limitations of R Familiarisation with the R studio environment Setting the working directory Packages for the extension of R functionality R conventions

  9. An introduction to R Introduction Installing R and R studio Windows installation – base R Go to the R project website https: //www.r-project.org/ Click on ’download R’ in the get started section R uses a hosting structure called CRAN (Comprehensive R Archive Network). Scroll down the list and select your local CRAN mirror. This will most likely be Bristol

  10. An introduction to R Introduction Installing R and R studio Windows installation – base R Select ’Download R for Windows’ Click on the ’base’ link as we want to install base R. Click on ’Download R 3.5.2 for Windows Your download should begin Launch the .exe installer and follow the on screen instructions

  11. An introduction to R Introduction Installing R and R studio Windows installation – R Studio Go to the R Studio download page https://www.rstudio.com/ products/rstudio/ download/ Select the Windows installer Your download should begin Launch the .exe installer and follow the on screen instructions

  12. An introduction to R Introduction Installing R and R studio Linux installation - R and R Studio The R base is available through the Ubuntu software center or you can install it from the command line using sudo apt install rbase RStudio can be installed in a couple of different ways but the easiest (thanks Mike) seems to be: Download the R studio installer from https: //download1.rstudio.org/rstudio-1.1.463-amd64.deb Go to your downloads folder and open a terminal there then type sudo dpkg -i rstudio...(use tab complete to get the full file name) To complete the installation some dependencies need to be installed. Use sudo apt install -f R Studio should now be installed

  13. An introduction to R Introduction The power and limitations of R S as the basis for R Developed as part of the GNU project – free and open source The R language is based on the S language developed by John Chambers in 1976 while at Bell Laboratories specifically for statistical computing

  14. An introduction to R Introduction The power and limitations of R The development of R R was created by Ross Ihaka and Robert Gentleman at the University of Auckland R was named partly after the first names of the two creators and partly as a play on the name of S. The project began in 1992, the first version was released in 1995 and a stable beta version was released in 2000

  15. An introduction to R Introduction The power and limitations of R The power of R Designed for vector and matrix arithmatic enabling faster calaculation over larger matrices than possible with object orientated languages such as C++, Java and Python Designed as a script based language rather than object orientated although does allow meta-programming for object like tasks Supports parallel processing and multithreading Can implement other languages e.g. C, C++, Fortran, Python and LaTex

  16. An introduction to R Introduction Familiarisation with the R studio environment The R console R console window - directly input commands into R, view inputs and outputs

  17. An introduction to R Introduction Familiarisation with the R studio environment R Scripting window Script window - write and run an R script

  18. An introduction to R Introduction Familiarisation with the R studio environment The variable explorer Variable explorer - lists active variables/objects

  19. An introduction to R Introduction Familiarisation with the R studio environment The plot window Plot window - displays and retains all plots

  20. An introduction to R Introduction Setting the working directory Setting your working directory in R Studio Navigate to the tools drop down on the top tool bar in R Studio Select global options which open a new window The first option you will see is the working directory setting Browse or manually enter the location of your R working directory

  21. An introduction to R Introduction Setting the working directory Setting your working directory in an R script Normally you will want to place your R scripts in specific sub-folders of your working directory to keep things organised The command to set the working directory manually in a script is setwd(’folder location’) When reading or writing anything to and from sub-folders of your working directory you need to add the sub-folder name(s) in the standard drive location format e.g. ’/subfolder/subsubfolder/subsubsubfolder’

  22. An introduction to R Introduction Packages for the extension of R functionality Installing and using packages R makes use of packages to extend its base functionality Packages need to be installed for each distribution of R that you run Packages are installed in R studio by going to the tools drop down on the top tool bar, selecting install packages, searching for the required package and selecting install

  23. An introduction to R Introduction Packages for the extension of R functionality Installing and using packages Packages can also be installed from the R command line using the command install.packages() function Packages need to be initialised in an R script. This is done by convention at the start of the script using library(package name)

  24. An introduction to R Introduction R conventions R does not require the use of correct indentations for the code to run however, convention dictates that standard indents are used The # (hash) symbol is used to insert comments into the code R uses specific assignment operators < − is assign the output from the right to the left = is the same as ¡- but it is poor practice to use this operator in this way < − is assign the output from the left to the right << − is assign the out from the right to the global/parent variable on the left − >> is assign the out from the left to the global/parent variable on the right

Recommend

INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

TRAINING COURSE ON SOCIAL PROTECTION &amp; FORMALIZATION TRINIDAD AND TOBAGO MARCH 15, 2017 INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION Design of the NIS Assistance from the

547 views • 23 slides
INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

Patterns of variation in the expression of case and agreement Andrs Brny Leiden University Centre for Linguistics 9 November 2019, BaSIS Workshop a.barany@hum.leidenuniv.nl INTRODUCTION Introduction 2/42 INTRODUCTION

1.37k views • 42 slides
Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures Definition and concepts Process and product properties Principles SE Approaches Motivation Software and the economy The economies of

1.03k views • 49 slides
Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1 https://www.cdc.gov/std/stats17/infographic.htm Introduction Epidemiology in Western Colorado CPHE Surveillance Data Report, May 2018 Chlamydia Epidemiology in Western

977 views • 39 slides
DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every meeting (2) Some ideas of diagrams for section 7.1 (Introduction) of TP. Giles Barr 25 Jan 2018, Pembroke College On DUNE, the reality is there is a

474 views • 10 slides
INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

ADVANCED COMPUTER SECURITY INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT IS SECURITY? A systems security policies describe What the system is supposed to do Store and provide access

479 views • 16 slides
Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout World Wide

387 views • 14 slides
14 Introduction Introduction Bad guys can put malware into Example: hosts

14 Introduction Introduction Bad guys can put malware into Example: hosts

Introduction Introduction source Encapsulation ISO/OSI reference model message M application segment H t H t M transport network datagram H n H n H t M presentation: allow applications to frame link H l H n H t M interpret

583 views • 4 slides
Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout

322 views • 8 slides
Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Introduction Zynq Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL Processing System Processor Peripherals Data Buses AXI Bus Conclusion BTE5380 - Embedded Systems Octobre 2014 Andreas Habegger

1.81k views • 30 slides
2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04 Project References S E 5 PART.1 SMILE5 Introduction M I L Introduction STORION-SMILE5 Residential Energy Storage System Inverter 5kW Output Input

1.06k views • 25 slides
Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an application server? Why use an application server? Course introduction Services provided by CICS How CICS applications are defined Scaling CICS to meet

1.84k views • 146 slides
Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic building blocks Node Links (relationship between nodes) Spatial information Network data

584 views • 9 slides
Introduction Introduction (1) Main argument of the paper: universities are not only

Introduction Introduction (1) Main argument of the paper: universities are not only

Le jugement des pairs comme outil de management des universits Peer-review as a management tool Christine Musselin (CSO, Sciences Po et CNRS) Avril 2013, Lirrsistible ascension du capitalisme acadmique Introduction Introduction (1)

590 views • 28 slides
Introduction Introduction to storage and to storage and filesystems filesystems Introduction

Introduction Introduction to storage and to storage and filesystems filesystems Introduction

Moreno Baricevic Gilberto Daz Axel Kohlmeyer Stefano Cozzini ULA ICTP CNR-IOM DEMOCRITOS Merida, VENEZUELA Trieste, ITALY Trieste, ITALY Introduction Introduction to storage and to storage and filesystems filesystems Introduction

1.19k views • 51 slides
JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of

JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of

JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of the brand new JA-100 alarm system Visions Basic architecture System components Setting Help us with final validations You are the FIRST ones

1.69k views • 111 slides
1 Introduction Introduction Communication System Baseband an adjective that describes

1 Introduction Introduction Communication System Baseband an adjective that describes

Introduction Introduction Physical Layer Mobile network Global ISP Provides the means to transmit bits Basic Concepts of from sender to receiver, Data Transmission Defines the mechanical, electrical, and Home network timing

463 views • 7 slides
Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical

Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical

INFOGR Computer Graphics Jacco Bikker - April-July 2015 - Lecture 1: Introduction Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical Details Assignments Field Study State of

869 views • 62 slides
Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction

Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction

Virtual and Augmented Reality Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction Who am I? What do I do here? 2 About me Short research bio: - 2014 - finished PhD at FMFI UK - 2014 2016 -

1.3k views • 39 slides
PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience

PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience

PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience for your presentation. It tells them what your presentation is about, why it is important, and finally, what to listen for in your speech. Get the

505 views • 3 slides
How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer

How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer

Introduction to Beamer Hafida Benhidour How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer Introduction to Beamer Hafida Benhidour Department of computer science King Saud University November

732 views • 49 slides
Shenzhen Cuilu jewelry Co., Ltd was founded in 1996 and its a large private enterprise

Shenzhen Cuilu jewelry Co., Ltd was founded in 1996 and its a large private enterprise

Introduction Introduction - - Brief Brief Introduction Introduction of of Cuilu Cuilu Group Group Introduction Introduction - - Brief Brief Introduction Introduction of of Cuilu Cuilu Group Group Shenzhen Cuilu jewelry Co., Ltd

147 views • 14 slides
Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

V olunteer C ommunications N etwork (V-C-N.org) Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org Academy Course - 2012-02.24-2208 262: Introduction to ICS-214 : V-C-N.org : Slide: 1 V olunteer C

735 views • 34 slides
Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

V olunteer C ommunications N etwork (V-C-N.org) Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org Academy Course - 2012-02.24-2208 262: Introduction to ICS-214 : V-C-N.org : Slide: 1 V olunteer C

558 views • 18 slides

More recommend