user3022875 - 5 months ago 29

R Question

I have a data in the t vector and given the data I can get quantile

`t = c(1,2,3,4,5,6,3,2,21,22,23,2,23,4,4,4444)`

quantile(t,c(.3))

3

But I would like to do the opposite

I want provide 3 and have it return the quantile percentage

like

`somefunction(3,t)`

Is there a function for that?

Answer

If `x`

is the vector, and `x0`

is the value you want to check, we can use

```
match(x0, sort(x)) / (length(x) + 1)
```

For your example:

```
x <- c(1,2,3,4,5,6,3,2,21,22,23,2,23,4,4,4444)
match(3, sort(x)) / (length(x) + 1)
# [1] 0.2941176
```