campelo_freq {iadf}

iadf frequency per ring width class

Description

Calculate the frequency per ring width class as suggested by Campelo (2015).

Usage

campelo_freq(iadf, rwl, n = 20)

Arguments

iadf

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

rwl

data frame containing ring widths with years in rows and series in columns

n

number of ring width classes

Value

a data frame

References

Campelo, F., Vieira, J., Battipaglia, G. et al. Which matters most for the formation of intra-annual density fluctuations in Pinus pinaster: age or size? Trees (2015) 29: 237. doi:10.1007/s00468-014-1108-9

See Also

campelo_chapman, campelo_index

Examples

data('example_iadf')
data('example_rwl')
model <- campelo_chapman(campelo_freq(example_iadf, example_rwl))
campelo_index(example_iadf, example_rwl, model)