R: Combine Tree-Ring Data Sets

combine.rwl {dplR} | R Documentation

## Combine Tree-Ring Data Sets

### Description

This function combines any number of `data.frames` of tree-ring data into one `data.frame`.

### Usage

    combine.rwl(x, y = NULL)

### Arguments

`x` | either a `data.frame` to be combined with `y`, or a `list` of `data.frame`s to be combined.
`y` | a `data.frame` to be combined with `data.frame` `x`.

### Details

The sequence of years in each `data.frame` must be increasing and continuous. The output produced by the function also fulfills this condition. If the input is differently formatted, the result will be wrong.

### Value

An object of class `c("rwl", "data.frame")` with the series in columns and the years as rows. The keycodes are the column names and the years are the row names.

### Author(s)

Christian Zang. Patched by Mikko Korpela.

### Examples

    library(utils)
    data(ca533)
    data(co021)
    combi1 <- combine.rwl(list(ca533, co021))
    ## or alternatively for data.frames to combine
    combi2 <- combine.rwl(ca533, co021)
    identical(combi1, combi2) # TRUE

[Package dplR version 1.7.1 Index]