I have data

```
test <- 1:10
```

and I would like to obtain the indices of `test`

that fulfill different related conditions. For example,

```
which(test>5)[1]
which(test>8)[1]
which(test>9)[1]
```

yield

```
[1] 6
[1] 9
[1] 10
```

when carried out individually, but is there a way to execute them simultaneously using a vector like

```
bounds <- c(5,8,9)
```

that then yields a vector containing the indices for each value in `bounds`

?

answered 3 months ago divibisan #1

Just use apply:

```
sapply(bounds, function(x) which(test>x)[1])
[1] 6 9 10
```

answered 3 months ago akrun #2

A couple of options are

```
findInterval(bounds, test) + 1
#[1] 6 9 10
```

which is the fastest, or

```
max.col(outer(bounds, test, `<`), 'first')
#[1] 6 9 10
```

which is the slowest, along with the commented one below the OP's post:

```
sapply(bounds, function(x) which(test > x)[1])
#[1] 6 9 10
```

which is neither the fastest, nor the slowest.