CODEWITHSUNDEEP
rrandom
Owen James Turner
Owen James Turner

Reputation: 1

R - random number generation

I want to generate a numeric vector of random numbers between 0 and 5,000 of length 2,500 and call it x.

Then I want to make a numeric vector y of all the numbers between 0 and 5,000 which aren't in x, which by definition is also length 2,500.

Then for each of these vectors I'd like to extract the corresponding row numbers from a table. Is there an easy way to do this?

Upvotes: 0

Views: 326

Answers (1)

Roman Luštrik
Roman Luštrik

Reputation: 70643

You can try this. The main object holds a table with two columns (you can think of them as your x and y).

main <- sample(1:5000, 5000)
main <- matrix(main, ncol = 2)
head(main)

     [,1] [,2]
[1,] 3146 4834
[2,] 4129 4297
[3,]  510 1843
[4,] 4513 1167
[5,] 1281 2550
[6,] 1076 4377

Upvotes: 2

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