search for: hydroacoust

...ember -1.80488 -1.81614 October -2.28896 -1.84266 October -2.4 -2.35319 #Commands lattice.options(default.args = list(as.table = TRUE)) xyplot(Log10_trawl_dens~Log10_echo_integration_dens | Month, data = (subset(T.A., Net_Type=="T")),ylim=c(-4,0),xlim=c(-4,0),xlab="Log density from hydroacoustics (integration)",ylab="Log density from Tucker trawl",main="Density estimates, Tucker Trawl", cex=1.5) Best, Paul S. [[alternative HTML version deleted]]

...example) is not correct. However, in a past R-help post (included below), there is some indication that the likelihood ratio test in anova.lme(mygamm$lme, mygamm1$lme) is valid. How can I tell if anova.lme results are meaningful (are AIC, BIC, and logLik estimates accurate)? The data include hydroacoustic estimates of fish biomass (lbloat) in 1,000 meter long intervals (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|tran...

Greetings This is a long email. I'm struggling with a data set comprising 2,278 hydroacoustic estimates of fish biomass density made along line transects in two lakes (lakes Michigan and Huron, three years in each lake). The data represent lakewide surveys in each year and each data point represents the estimate for a horizontal interval 1 km in length. I'm interested in compari...