This function subsets out probabilities assigned to planning units above a
threshold. It effectively sets the probability that species inhabit planning
units to zero if they are below the threshold.

```
prob.subset(x, species, threshold)
# S3 method for RapData
prob.subset(x, species, threshold)
# S3 method for RapUnsolOrSol
prob.subset(x, species, threshold)
```

## Arguments

- x
`RapData()`

, `RapUnsolved()`

, or
`RapSolved()`

object.

- species
`integer`

vector specifying the index of the species to
which the threshold should be applied.

- threshold
`numeric`

probability to use a threshold.

## Examples

```
# \dontrun{
# load data
data(sim_ru)
# generate new object with first 10 planning units
sim_ru2 <- prob.subset(sim_ru, seq_len(3), c(0.1, 0.2, 0.3))
# }
```