as.rwl: as.rwl

In dplR: Dendrochronology Program Library in R

Description

Attempts to turn its argument into a rwl object.

Usage

as.rwl(x)

Arguments

x	a data.frame or matrix with series as columns and years as rows

Details

This tries to coerce x into class c("rwl","data.frame"). Failable.

Value

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

Author(s)

Andy Bunn. Patched and improved by Mikko Korpela.

Examples

library(graphics)
library(stats)
library(utils)
## Toy
n <- 100
## Make a data.frame that is tree-ring like
base.series <- 0.75 + exp(-0.2 * 1:n)
foo <- data.frame(x1 = base.series + abs(rnorm(n, 0, 0.25)),
                  x2 = base.series + abs(rnorm(n, 0, 0.25)),
                  x3 = base.series + abs(rnorm(n, 0, 0.25)),
                  x4 = base.series + abs(rnorm(n, 0, 0.25)),
                  x5 = base.series + abs(rnorm(n, 0, 0.25)),
                  x6 = base.series + abs(rnorm(n, 0, 0.25)))
# coerce to rwl and use plot and summary methods
foo <- as.rwl(foo)
class(foo)
plot(foo, plot.type="spag")
summary(foo)

Example output

[1] "rwl"        "data.frame"
  series first last year  mean median stdev  skew  gini   ar1
1     x1     1  100  100 1.008  0.943 0.203 1.401 0.105 0.371
2     x2     1  100  100 1.033  0.973 0.229 1.108 0.119 0.280
3     x3     1  100  100 0.994  0.941 0.219 1.942 0.108 0.565
4     x4     1  100  100 0.977  0.915 0.199 1.661 0.102 0.289
5     x5     1  100  100 0.993  0.956 0.206 1.606 0.106 0.250
6     x6     1  100  100 0.991  0.928 0.211 1.411 0.112 0.428

dplR documentation built on May 2, 2019, 6:06 p.m.