nodal.fit: Fit a 18.613 year nodal cycle.
In sealevel: Utility functions for reading and analyzing trends in common used sealevel archives.

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

1	nodal.fit(zoo,degree=1)

`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.

`lm`	An object of class `lm` is returned.

Fedor Baart

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

sealevel documentation built on May 2, 2019, 6:51 p.m.

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