Re: [R] GAMs and GAMMS with correlated acoustic data

2008-11-17 Thread Simon Wood
David, Are you using the normalized residuals from the $lme part of the gam object (i.e. something like residuals(foo$lme,type="normalized"))? Without standardization the raw residuals will look pretty much as bad for the gamm as they did for the gam (actually they might even lookl a little wo

[R] GAMs and GAMMS with correlated acoustic data

2008-11-15 Thread David M Warner
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 rep