ClamR (version 2.1-3)

proxyA: Optimum Wilkinson Curve Fitting

Description

Runs one cycle of optimum Wilkinson curve fitting for a single sinusoid fitting.

Usage

proxyA(ax, ay, xin)

Value

Optimum model, vector of 4 values

Arguments

ax

x-axis values

ay

y-axis values

xin

starting model: c( Phs,Pos,Amp,Prd)

Author

Jonathan M. Lees<[e-mail]>

Details

This program implements the Wilkinson and ivany approach to climate time series modeling. This is used in the more sophisticated proxyJK code.

References

Wang, T., Surge, D., and Lees, J. M., (2015) ClamR: A Statistical Evaluation of Isotopic and Temperature Records in Sclerochronologic Studies. Palaeogeography, Palaeoclimatology, Palaeoecology, doi:10.1016/j.palaeo.2015.07.008.\

Wilkinson, B. H. and Ivany, L. C., Paleoclimatic inference from stable isotope profiles of accretionary biogenic hardparts; a quantitative approach to the evaluation of incomplete data, Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 185, no. 1-2, pp.95-114, 01 Sep 2002

See Also

proxyJK

Examples

data(CLAM1)
x = CLAM1$x
y = CLAM1$y

dx = 3.392

Aout = proxyA(x, y, dx)