afrp {iadf}

adjusted false ring proportion

Description

Calculate the adjusted false ring proportion, as suggested by Osborn et. al. (1997), of a set of binary false ring assignments.

Usage

afrp(iadf)

Arguments

iadf

A data frame with numeric columns representing individual series and years as rownames where years with IADF are marked with 1, those without with 0, years not covered by the series are set to NA.

Value

a data frame

References

Osborn TJ, Briffa KR and Jones PD (1997) Adjusting variance for sample-size in tree-ring chronologies and other regional mean time-series. Dendrochronologia 15, 89-99.

See Also

frp