BIOdry (version 0.4)

levexp: Vector releveling

Description

Expansion or reduction of a numeric vector by matching its level names with the ecological factors of a multilevel ecological data series.

Usage

levexp(x, levels)

Arguments

x

numeric vector with names of the vector representing the levels to be matched.

levels

data.frame. Multilevel ecological data series, or character vector of levels.

Value

Examples

##Multilevel ecological data series of tree-ring widths:
data(Prings05,envir = environment())
## Tree-radial increments measured at 2003:
data(Pradii03,envir = environment())    

## Getting levels in 'sample' factor of the Prings05 object.
ntl <- names(splitFrame(Prings05,'sample'))
## Releveling the tree radii
refs <- levexp(Pradii03,ntl)