Variance: Create a streamer for calculating the population and sample...

In THargreaves/onlineoceanarium: Online Oceanarium

Description

Variance creates a streaming algorithm that can be used to calculate the population and sample variance of incoming values

Format

An R6Class generator object

Methods

Public methods

• Variance$new()

• Variance$update()

• Variance$clone()

---

Method new()

Creates a new Variance streamer object.

Usage

Variance$new(x = NULL, sample = FALSE)

Arguments

x

values to be used during initialization (optional)

Returns

The new Variance (invisibly)

Examples

variance <- Variance$new()

---

Method update()

Updates the Variance with a stream of new values

Usage

Variance$update(x)

Arguments

x

a vector of values to update the Variance

sample

for choosing between the population and sample variance. If 'TRUE' the sample variance is returned. If 'FALSE' the population variance is returned.

Returns

The updated Variance (invisibly)

Examples

variance <- Variance$new(c(1,2))
variance$update(c(3,4))

---

Method clone()

The objects of this class are cloneable with this method.

Usage

Variance$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

variance <- Variance$new(c(1, 2))
variance$update(c(3, 4))
variance$value
#> [1] 1.25


## ------------------------------------------------
## Method `Variance$new`
## ------------------------------------------------

variance <- Variance$new()


## ------------------------------------------------
## Method `Variance$update`
## ------------------------------------------------

variance <- Variance$new(c(1,2))
variance$update(c(3,4))

THargreaves/onlineoceanarium documentation built on Jan. 13, 2022, 10:41 p.m.