search for: lakef

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2008 Nov 15
1
GAMs and GAMMS with correlated acoustic data
...1771 2 527331.6 4844636 8 9 nn_1 0.000000 0.067646462 20.912908 2005 87.76123 2 527495.9 4843390 9 10 nn_1 0.000000 0.006012106 26.611785 2005 87.59767 2 527606.6 4842426 10 #GAM example bloat.gam8 <- gam(log10(yaobloaterbiom+0.00325) ~ lakef +s(depth, by=lakef), data=fish3) #GAMM example: bloat.gamm1 <- gamm(log10(yaobloaterbiom+0.00325) ~ lakef + s(depth, by=lakef), correlation=corAR1(form = ~ interval|tranf), data=fish3) However, GAMM results from models including a wide variety of correlation structures (corExp, CorSpher, C...
2008 Nov 19
2
GAMM and anove.lme question
...ervals (elementary sampling units) from multiple transects (each 20-30 km long, tranf) in two different lakes and three different years. bloat.gamm1 <- gamm(lbloat ~ s(depth), correlation=corSpher(c(30000, 0.01),form = ~ x+y|tranf, nugget=TRUE), data=fish3) bloat.gamm2 <- gamm(lbloat ~ lakef + s(depth), correlation=corSpher(c(30000, 0.01),form = ~ x+y|tranf, nugget=TRUE), data=fish3) bloat.gamm3 <- gamm(lbloat ~ lakef + s(depth, by=lakef), correlation=corSpher(c(30000, 0.01),form = ~ x+y|tranf, nugget=TRUE), data=fish3) > anova.lme(bloat.gamm1$lme, bloat.gamm2$lme, bloat....