dpmf: dpmf
In joon3216/funpark: Functions written by Junkyu Park

Description Usage Arguments Author(s) See Also Examples

Create a probability mass function.

1	dpmf(x, pmf_vec, support_vec)

`x`	A number, or a vector whose class is the same as `support_vec`
`pmf_vec`	A numeric vector, where each element falls in [0, 1] and sums up to 1
`support_vec`	A vector with the same length as `pmf_vec` where each entry of `support_vec` is the input that corresponds to the probability in `pmf_vec`; if missing, it is replaced with `0:(length(pmf_vec) - 1)`.

Junkyu Park

rpmf, Evaluating a hard-to-evaluate pmf using pgf and DFT

# Example 1: dfruit
dfruit <- function(x){
    unname(dpmf(x, c(.25, .4, .35), c('apple', 'orange', 'neither')))
}
dfruit(c('apple', 'neither', 'pineapple'))
# Example 2: dbinom with size = 2 and prob = .5
dbinom2 <- function(x){dpmf(x, c(.25, .5, .25), 0:2)}
dbinom2(-2:3)