Function ppois

ppois<T extends Vectorizable>(
    q: T,
    lambda: number,
    options?: TailOptions,
): VectorResult<T>
Distribution function of the Poisson distribution. Equivalent to R's ppois(q, lambda, lower.tail = TRUE, log.p = FALSE).
Type Parameters
- T extends Vectorizable
Parameters
- q: T
  Quantile(s): a number, number[] or Float64Array. The result has the same shape.
- lambda: number
  Mean.
- options: TailOptions = {}
  lowerTail and logP (see TailOptions).
Returns VectorResult<T>
The probability (or log probability).
Example
```
ppois(2, 3);                       // 0.4231900811268436
ppois(5, 3, { lowerTail: false }); // P[X > 5] = 0.08391794203130346
```
- Defined in distributions/poisson.ts:121