在数组中查找特定值

Question

I am relatively new to R programming. I am writing a code that generates an array of numbers:

[1] 0.5077399,  0.4388107, 0.3858783, 0.3462711, 0.3170844, 0.2954411, 0.2789464, 0.2658839,

[9] 0.2551246, 0.2459498 

Note: I manually separated the values by commas for ease on the eyes :)

I want to pick the first 3 numbers from this array that are below 0.3 - [0.2954411, 0.2658839, 0.2551246] . In addition to picking these values, I want to generate the numbers that represents where those three values exist within the array. In this case, I want the code to give me [6,7,8].

How would I write code to do this?

I greatly appreciate the help.

Answer 1

For a similar simulated set,

y <- c(2, 4,6, 8)
ind <- which(y < 6) ## for finding indices 1 and 2
val <- y[y<6]       ## for picking values  2 and 4