1.5 Round Function

Rounding in R is different from SAS or MS-Excel.

round(0.5) # run yourself
round(1.5)
round(2.5)

x = 1:10 - 0.5 ; x

##  [1] 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5

round(x) # round to even number

##  [1]  0  2  2  4  4  6  6  8  8 10

If you want ordinary rounding function, you can use Round function in math package.

Round

## function (x, digits = 0) 
## {
##     Sign = sign(x)
##     Temp = abs(x)/10^(-digits)
##     Temp = trunc(Temp + 0.5)
##     Temp = Temp * 10^(-digits)
##     return(Sign * Temp)
## }
## <bytecode: 0x000001e2a3e56950>
## <environment: namespace:math>

Round(1:10 - 0.5)

##  [1]  1  2  3  4  5  6  7  8  9 10

Round(450, 2)

## [1] 450

Round(1.25, -1)

## [1] 0