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STA 326 2.0 Programming and Data Analysis with R

🚦Built-in functions in R: Anatomy

Dr Thiyanga Talagala

1

Function Anatomy

vec1 <- c(1, 2, 3, 4, 5)
mean(vec1)
[1] 3
vec2 <- c(1, 2, NA, 3, 4, 5)
mean(vec2)
[1] NA

Help

?mean

2

help: mean

3

help: sort

4

5

mean with additional inputs

vec1 <- c(1, 2, 3, 4, 5)
mean(vec1)
[1] 3
vec2 <- c(1, 2, NA, 3, 4, 5)
mean(vec2)
[1] NA
mean(vec2, na.rm=TRUE)
[1] 3

6

7

8
vec <- c(10, 1, 2, 4, 100, 15)
sort(vec)
[1] 1 2 4 10 15 100
sort(vec, decreasing = TRUE)
[1] 100 15 10 4 2 1
sort(vec, decreasing = FALSE)
[1] 1 2 4 10 15 100

9

rep

10

Thank you!

Slides available at: hellor.netlify.app

All rights reserved by Thiyanga S. Talagala

12

Function Anatomy

vec1 <- c(1, 2, 3, 4, 5)
mean(vec1)
[1] 3
vec2 <- c(1, 2, NA, 3, 4, 5)
mean(vec2)
[1] NA

Help

?mean

2
Paused

Help

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