nodal.fit {sealevel}R Documentation

Fit a 18.613 year nodal cycle.

Description

Does a linear model of trend and a nodal fit on sea level rise records.

Usage

nodal.fit(zoo,degree=1)

Arguments

zoo

a zoo timeseries used for analysis

degree

The degree of the fitted polynomial (degree 1=line, degree 2=parabola). Degree 1 is used for including sea level rise. Degree 2 is for including both rise and deceleration or acceleration.

Value

lm

An object of class lm is returned.

Author(s)

Fedor Baart

See Also

lm zoo

Examples

 data(dutch)	
 zoo <- dutch[[1]]$zoo 
 nodal.fit(zoo)

[Package sealevel version 0.2.1 Index]