R: Get a specific position between two states

tween_at {tweenr} | R Documentation

## Get a specific position between two states

### Description

This tween allows you to query a specific postion between two states rather than generate evenly spaced states. It can work with either data.frames or single vectors and each row/element can have its own position and easing.

### Usage

    tween_at(from, to, at, ease)

### Arguments

`from, to` | A data.frame or vector of the same type. If either is of length/nrow 1 it will get repeated to match the length of the other
`at` | A numeric between 0 and 1 recycled to match the nrow/length of `from`
`ease` | A character vector giving valid easing functions. Recycled to match the ncol of `from`

### Value

If `from`/`to` is a data.frame then a data.frame with the same columns. If `from`/`to` is a vector then a vector.

### Examples

    tween_at(mtcars[1:6, ], mtcars[6:1, ], runif(6), 'cubic-in-out')

[Package tweenr version 1.0.2 Index]