unmarked (version 1.5.0)

modSel: Model selection on a list of unmarked model fits

Description

Model selection results from an unmarkedFitList

Value

An object of class unmarkedModSel.

Arguments

object

an object of class "unmarkedFitList" created by the function fitList.

nullmod

optional character naming which model in the fitList contains results from the null model. Only used in calculation of Nagelkerke's R-squared index.

Author

Richard Chandler

References

Nagelkerke, N.J.D. (2004) A Note on a General Definition of the Coefficient of Determination. Biometrika 78, pp. 691-692.

See Also

unmarkedModSel-class

Examples

data(linetran)
(dbreaksLine <- c(0, 5, 10, 15, 20)) 
lengths <- linetran$Length * 1000

ltUMF <- with(linetran, {
	unmarkedFrameDS(y = cbind(dc1, dc2, dc3, dc4), 
	siteCovs = data.frame(Length, area, habitat), dist.breaks = dbreaksLine,
	tlength = lengths, survey = "line", unitsIn = "m")
	})

fm1 <- distsamp(~ 1 ~1, ltUMF)
fm2 <- distsamp(~ area ~1, ltUMF)
fm3 <- distsamp( ~ 1 ~area, ltUMF)

fl <- fitList(Null=fm1, A.=fm2, .A=fm3)
fl

ms <- modSel(fl, nullmod="Null")
ms

coef(ms)                            # Estimates only
SE(ms)                              # Standard errors only
(toExport <- as(ms, "data.frame"))  # Everything