common.interval {dplR} | R Documentation |

## Common Interval

### Description

This function finds the common interval on a set of tree-ring widths
such as that produced by `read.rwl`

.

### Usage

```
common.interval(rwl, type=c("series", "years", "both"),
make.plot=TRUE)
```

### Arguments

`rwl` |
a |

`type` |
a |

`make.plot` |
a |

### Details

This trims an `rwl`

object to a common interval that maximizes
the number of series (`type="series"`

), the number of years
(`type="years"`

), or a compromise between the two
(`type="both"`

). A modified `seg.plot`

can be drawn
as well.

### Value

A `data.frame`

with `colnames(`

and
`x`)`rownames(`

.
`x`)

### Author(s)

Filipe Campelo, Andy Bunn and Mikko Korpela

### See Also

### Examples

```
library(utils)
data(co021)
co021.s <- common.interval(co021, type="series", make.plot=TRUE)
co021.y <- common.interval(co021, type="years", make.plot=TRUE)
co021.b <- common.interval(co021, type="both", make.plot=TRUE)
dim(co021)
dim.s <- dim(co021.s)
dim.s # the highest number of series
prod(dim.s) # (33 series x 288 years = 9504)
dim.y <- dim(co021.y)
dim.y # the highest number of years
prod(dim.y) # (27 series x 458 years = 12366)
dim.b <- dim(co021.b)
dim.b # compromise solution
prod(dim.b) # (28 series x 435 years = 12180)
```

[Package

*dplR*version 1.7.7 Index]