Rscript

Assigning OPerator

It will store a value in a variable

a<-2
a

## [1] 2

Function

Its a function c of numeric values

c(1,2,3)

## [1] 1 2 3

c

## function (..., recursive = FALSE)  .Primitive("c")

a<-1 + 1 # this is a comment

Function , Comment ,Install Packages

Ctrl+ALt +I is for inserting a junk Ctrl+R for executing your script

x<-c(1:20)
x

##  [1]  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20

mean(x)

## [1] 10.5

>install.packages("ggplot2")

x<-c(1,2,3,4,5:10,NA)

sd(x)

## [1] NA

sd(x,na.rm= TRUE)

## [1] 3.02765

sd(x,TRUE)

## [1] 3.02765

sd(TRUE,x)

## Warning in if (na.rm) "na.or.complete" else "everything": the condition has
## length > 1 and only the first element will be used

## [1] NA

sd(na.rm=TRUE,x)

## [1] 3.02765

sd(TRUE,x=x)

## [1] 3.02765

create one 5-dimensional vector of values 4,7,3,2,5 as ‘x’ add 2 with x and assign the value to y find the mean,sd of y create another variable z as comcombination of 2,3 add x and z

x<-c(4,7,3,2,5)
x

## [1] 4 7 3 2 5

y<-x+2
y

## [1] 6 9 5 4 7

mean(y)

## [1] 6.2

sd(y)

## [1] 1.923538

z<-c(2,3)
z

## [1] 2 3

x+z

## Warning in x + z: longer object length is not a multiple of shorter object
## length

## [1]  6 10  5  5  7

```

10+2

## [1] 12