search for: swantj

....germ~a*exp(-b*exp(-k*day)),data=tab,start=list(a=100,b=10,k=0.5)) My problem is that I want that the fitted model goes through the origin, since germination cannot start before the experiment was started, and y-max should be 100. Does anyone know how I can achieve this? Thanks a lot in advance! Swantje

...tructures in glmmPQL, but it seems that this does not work in the same way for geeglm or geese. Do I need to use the function genZcor? 3. Makes it sense to use continents to specify clusters? Or is the number of clusters (8) too low? I am grate-full for any comments! Thank you in advance, Swantje Swantje Löbel PhD student Department of Plant Ecology Evolutionary Biology Centre (EBC) Uppsala University Villavägen 14 SE-752 36 Uppsala Sweden Tel. +46 18 471 28 70 Fax +46 18 55 34 19 http://www.vaxtbio.uu.se/resfold/lobel.htm [[alternative HTML version deleted]...