Tidy Randomly Generated Poisson Distribution Tibble — tidy_poisson • TidyDensity
Description: This function will generate n random points from a Poisson distribution with a user provided, .lambda, and number of random simulations to be produced. The function returns a tibble with the simulation number column the x column which corresponds to the n randomly generated points, the d_, p_ and q_ data points as well. The data is returned un-grouped. The columns that are output are: sim_number The current simulation number. x The current value of n for the current simulation. y The randomly generated data point. dx The x value from the stats::density() function. dy The y value from the stats::density() function. p The values from the resulting p_ function of the distribution family. q The values from the resulting q_ function of the distribution family.

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# Tidy Randomly Generated Poisson Distribution Tibble

Source: `R/random-tidy-poisson.R`
`tidy_poisson.Rd`

This function will generate `n` random points from a Poisson distribution with a user provided, `.lambda`, and number of random simulations to be produced. The function returns a tibble with the simulation number column the x column which corresponds to the n randomly generated points, the `d_`, `p_` and `q_` data points as well.

The data is returned un-grouped.

The columns that are output are:

- `sim_number` The current simulation number.

- `x` The current value of `n` for the current simulation.

- `y` The randomly generated data point.

- `dx` The `x` value from the `stats::density()` function.

- `dy` The `y` value from the `stats::density()` function.

- `p` The values from the resulting p_ function of the distribution family.

- `q` The values from the resulting q_ function of the distribution family.

## Usage

    tidy_poisson(.n = 50, .lambda = 1, .num_sims = 1)

## Arguments

.n

  The number of randomly generated points you want.

.lambda

  A vector of non-negative means.

.num_sims

  The number of randomly generated simulations you want.

## Value

A tibble of randomly generated data.

## Details

This function uses the underlying `stats::rpois()`, and its underlying `p`, `d`, and `q` functions. For more information please see `stats::rpois()`

## See also

https://r-coder.com/poisson-distribution-r/

https://en.wikipedia.org/wiki/Poisson_distribution

Other Poisson: `tidy_zero_truncated_poisson()`, `util_poisson_param_estimate()`, `util_poisson_stats_tbl()`

Other Discrete Distribution: `tidy_bernoulli()`, `tidy_binomial()`, `tidy_hypergeometric()`, `tidy_negative_binomial()`, `tidy_zero_truncated_binomial()`, `tidy_zero_truncated_negative_binomial()`, `tidy_zero_truncated_poisson()`

## Author

Steven P. Sanderson II, MPH

## Examples

    tidy_poisson()
    #> # A tibble: 50 × 7
    #>    sim_number     x     y     dx      dy     p     q
    #>    <fct>      <int> <int>  <dbl>   <dbl> <dbl> <dbl>
    #>  1 1              1     2 -1.36  0.00316 0.920     2
    #>  2 1              2     1 -1.22  0.00746 0.736     1
    #>  3 1              3     1 -1.09  0.0161  0.736     1
    #>  4 1              4     1 -0.950 0.0316  0.736     1
    #>  5 1              5     3 -0.813 0.0569  0.981     3
    #>  6 1              6     2 -0.676 0.0933  0.920     2
    #>  7 1              7     0 -0.539 0.140   0.368     0
    #>  8 1              8     0 -0.401 0.192   0.368     0
    #>  9 1              9     2 -0.264 0.242   0.920     2
    #> 10 1             10     0 -0.127 0.281   0.368     0
    #> # ℹ 40 more rows