Calculation of age corrected IADF frequencies according
to Novak et al. (2013).
Usage
novak_index(iadf, model, po = NULL, method = "difference")
Value
a data frame
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.
model
a model, output of either novak_weibull
po
an optional data frame of pith offsets with series names in the
first and pith offsets in the second column
method
method for the RCS detrending, 'quotient' or 'difference'
References
Novak, Klemen and Sánchez, Miguel Angel Saz and Čufar, Katarina and
Raventós, Josep and de Luis, Martin. Age, climate and intra-annual density
fluctuations in in Spain, IAWA Journal, 34, 459-474 (2013),
doi:10.1163/22941932-00000037