Presentation groups:

1
Presentation groups

• Jackie Cordell, Mike Poellmann, Rebecca Yapp
• Patrick Mathias, Chas Conway
• Jing Xu, Chenara Johnson, Cheng Ouyang
• Brandon Smith, Allison Tegge, Dan Xie
• Yichun Chen, Peggy Qiu, Cecile Cousot (Golub
  paper, presented on Sept 11)
• Rong Kong, Rohit Reddy, Nell Keith
• Tze Howe Charn, Zachary Hafez, Maria Pineda

2

• The secrete space for slides
• http//bioinfor.bioen.uiuc.edu/bioe598/slides/
• Watch schedule updates!
• Bring your book to class.

3
R basics

• Help
• Commands
• Vectors and assignment

4
Getting help

• help.start()
• ?q()
• ?dist
• example(dist)

5
Commands

• 11
• xlt-"hello,world
• print(x)
• print(x)
• print(x)

6
Vectors and assignment

• x lt- c(10.4, 5.6, 3.1, 6.4, 21.7) assignment
  operator (lt-')
• x -gt y
• 1/x
• sort(x)
• max(x)

7
Sequences

• seq(-5, 5, by.2) -gt s3
• s5 lt- rep(x, times5)

8
Adding a name to the vector

• fruit lt- c(5, 10, 1, 20)names(fruit) lt-
  c("orange", "banana", "apple", "peach")lunch lt-
  fruitc("apple","orange")

9
Basic concepts in Computational Biology
10
Homework (Due Aug 30)

• Read "An introduction to R" (http//cran.r-project
  .org/doc/manuals/R-intro.htmlThe-R-environment)
  Chapters 2 and 3. Print these chapters and bring
  to the next class.
• Gentleman book 12.1(page189) -12.2.2(page 195)