SinMod {ClamR}

Sine Model of climate time series

Description

Sine Model of climate time series

Usage

SinMod(x, myEx, dC2)

Arguments

x

input model x consisting of 4 values, phase, position, amplitude, period

myEx

externally defined X-values

dC2

externally defined observations at X

Details

This is the function used in optimization of sinusoidal fits to climate data.

Value

squared sum of difference between obsereved and predicted

Note

Uses stats package for optimization

Author(s)

Jonathan M. Lees<[e-mail]>

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.

See Also

optim, proxyA, proxyJK

Examples

data(CLAM1)
x = CLAM1$x
y = CLAM1$y
 dx = 3.392

A1 = proxyA(x, y, dx)

RMSout = SinMod(A1$par, x, y)