Links

• Downloads
  • R for OS X: http://cran.cnr.berkeley.edu/
  • RStudio for OS X: http://rstudio.org/download/desktop
• Try R: Online course (sponsored by O'Rielly
• http://statmethods.net
  • Multiple (Linear) Regression
• Hadley Wickham – http://had.co.nz
  • http://courses.had.co.nz – Slides from all his classes.
    • R development master class
• http://colorbrewer2.org/
• 10 R packages I wish I knew about earlier

Miju and Chirayu notes

• mtcars: Built in sample dataset
• Matrix vs. Data Frame
  • data.frame is like a spreadsheet. Can hold multiple data types.
  • matrix is homogenous.
• R-Studio
  • ?? recast
    • Show the help file for recast
• Libraries
  • ggplot2
    • Most common plotting/graphing package.
    • Docs: http://had.co.nz/ggplot2/
    • Cookbook
      • Axes
      • Titles
    • http://www.ansci.wisc.edu/morota/R/ggplot2/ggplot2.html
  • plyr
  • reshape2
• Gotchas
  • R is case sensitive but will search for unique prefixes and use it instead.
  • R has different symbol tables for functions vs. lvalues.

Sample code

global_var <<- 10  # global assignment
local_var <- 10    # local assignment

dataframe$column_name <- something    # Assign to column in dataframe

install.packages("ggplot2")
# The downloaded binary packages are in
# /var/folders/00/0lf50000h01000cxqpysvccm002drm/T//RtmpzBHshI/downloaded_packages


hist(mtcars$cars)