set.seed()
function in R Language is used to create random numbers which can be reproduced. It helps in creating same random numbers each time a random function is called. This helps in creating repeatable data sets for a analysis.
Syntax: set.seed(n)
Parameters:
n: seeds for repeatable data sets
Example 1:
set .seed( 10 )
x < - rnorm( 15 )
x
set .seed( 10 )
y < - rnorm( 15 )
y
identical(x, y)
|
Output:
[1] 0.01874617 -0.18425254 -1.37133055 -0.59916772 0.29454513 0.38979430
[7] -1.20807618 -0.36367602 -1.62667268 -0.25647839 1.10177950 0.75578151
[13] -0.23823356 0.98744470 0.74139013
[1] 0.01874617 -0.18425254 -1.37133055 -0.59916772 0.29454513 0.38979430
[7] -1.20807618 -0.36367602 -1.62667268 -0.25647839 1.10177950 0.75578151
[13] -0.23823356 0.98744470 0.74139013
[1] TRUE
Example 2:
set .seed( 10 )
x < - rexp( 15 )
x
set .seed( 10 )
y < - rexp( 15 )
y
identical(x, y)
|
Output:
[1] 0.01495641 0.92022120 0.75215894 1.57504185 0.23165862 1.08667300
[7] 2.32762287 0.72912382 1.28831010 0.67226829 0.42652979 1.11542195
[13] 1.31654707 0.41329383 0.67657533
[1] 0.01495641 0.92022120 0.75215894 1.57504185 0.23165862 1.08667300
[7] 2.32762287 0.72912382 1.28831010 0.67226829 0.42652979 1.11542195
[13] 1.31654707 0.41329383 0.67657533
[1] TRUE