rle {base} | R Documentation |

## Run Length Encoding

### Description

Compute the lengths and values of runs of equal values in a vector
– or the reverse operation.

### Usage

rle(x)
inverse.rle(x, ...)

### Arguments

`x` |
a simple vector for `rle()` or an object of class
`"rle"` for `inverse.rle()` . |

`...` |
further arguments which are ignored in **R**. |

### Value

`rle()`

returns an object of class `"rle"`

which is a list
with components

`lengths` |
an integer vector containing the length of each run. |

`values` |
a vector of the same length as `lengths` with the
corresponding values. |

`inverse.rle()`

is the inverse function of `rle()`

.

### Examples

x <- rev(rep(6:10, 1:5))
rle(x)
## lengths [1:5] 5 4 3 2 1
## values [1:5] 10 9 8 7 6
z <- c(TRUE,TRUE,FALSE,FALSE,TRUE,FALSE,TRUE,TRUE,TRUE)
rle(z)
rle(as.character(z))
stopifnot(x == inverse.rle(rle(x)),
z == inverse.rle(rle(z)))

[Package

*base* version 2.5.0

Index]