1. ATM 315 Environmental Statistics Course 2014-01-23 1 Goto http://www.rstudio.com/http://www.rstudio.com/ Follow the link and then choose the desktop application Download the R base package (see also next page) & R-Studio Follow the instructions of the Installer First download & install the R base package Then download & install RStudio Follow the link

2. ATM 315 Environmental Statistics Course 2014-01-23 2 www.cran.us.r-project.org

3. ATM 315 Environmental Statistics Course 2014-01-23 3 Command-line window Multi-function Window (for file browsing, plotting, Software package management … Memory window: list of objects Currently in the memory for use

4. ATM 315 Environmental Statistics Course 2014-01-23 4 Menu list for the R-Studio: (1)Set your work path for the Session (and current sessions) Command-line window Your files in the directory I suggest for this course: Create your atm315course directory with 3 sub-directories: (1)scripts (2)data (3) figures R-scripts (programs) are plain text files with ending.R ( NOT formatted Word documents)

5.  We first set the working directory for the session (in menu ‘session’, choose ‘set working directory’)  Or type into the command line window ( in windows it will start with C:/Users), MAC it will start with /Users/) setwd("C:/Users/oe524132/WORK/111TEACHING/R-course") 5 Subdirectory ‘data’ Collection of datasets (input data and output data) Subdirectory ‘scripts’ Contains the scripts. Scripts are text files ending ‘.R’ They contain program codes that can be executed Subdirectory ‘figures’ We will collect our plots in this directory Your working directory should have three subdirectories:

6.  With Windows File Browser tool / Mac Finder go into any directory of your choice  Create a new folder (named e.g. “R-Course”). Then enter the folder and  Create 3 new folders in there: “scripts”, “data”, “figures”  NEXT start R-Studio and  set the working directory for the session  (in menu ‘session’, choose ‘set working directory’)  Or type into the command line window (in windows it will start with C:/Users), MAC it will start with /Users/) In my case the directory path in set setwd("C:/Users/oe524132/WORK/111TEACHING/R-course") (your path name will differ of course on your system) source(“scripts/hadcrut4.R”) NOTE: R commands and scripts are case sensitve (i.e. the function call “Source(“scripts/hadcrut4.R)” doesn’t work! 6

7.  We first set the working directory for the session (in menu ‘session’, choose ‘set working directory’)  Or type into the command line window ( in windows it will start with C:/Users), MAC it will start with /Users/) setwd("C:/Users/oe524132/WORK/111TEACHING/R-course") source(“scripts/hadcrut4.R”) NOTE: R commands and scripts are case sensitve (i.e. the function call “Source(“scripts/hadcrut4.R)” doesn’t work! 7

8.  example001.R 8

9. 9 example001.R

10.  example001.R 10

11.  example001.R 11

12.  HADCRUT4 global annual mean temperature anomalies  Global warming trend 12 A good habit: give reference /credit to the data source and date of retrieval. Acknowledge the developers of the data sources: Morice, C. P., J. J. Kennedy, N. A. Rayner, and P. D. Jones (2012), J. Geophys. Res., 117, D08101, doi:10.1029/2011JD017187. Data retrieved from http://www.metoffice.gov.uk/hadobs/hadcrut4/data/current/download.htmlhttp://www.metoffice.gov.uk/hadobs/hadcrut4/data/current/download.html 2014-01-20, [Version HadCRUT.4.2.0.0 (file HadCRUT.4.2.0.0.annual_ns_avg.txt)] Global warming stalled?

13. 13 script: hadcrut4.R

14.  example001.R 14 hadcrut4.R

15. 15