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occurn
2012 Aug 14
1
Error; contrasts can be applied only to factors with 2 or more levels
...350 0.726
x14 -3.70 10.5 -0.353 0.724
Detection:
Estimate SE z P(>|z|)
(Intercept) -4.0248 2.085 -1.93 0.0536
x3 0.0171 0.011 1.55 0.1201
x13 3.1903 1.992 1.60 0.1093
x14 2.8895 2.528 1.14 0.2531
AIC: 120.386
>
> (occuRN1<-occuRN(~1 ~1, umf))
Call:
occuRN(formula = ~1 ~ 1, data = umf)
Abundance:
Estimate SE z P(>|z|)
-2.01 0.31 -6.48 9.03e-11
Detection:
Estimate SE z P(>|z|)
0.447 0.577 0.775 0.438
AIC: 114.2012
> (occuRN2<-occuRN(~x3 ~x1, umf))
Call:
occuRN(formula = ~...