search for: welln

Hi, I've an issue adding an interaction to a GAMM: My model was of form: gamm1 <- gamm(TOTSR ~ fROT + s(PH) + s(LOI) + s(ASP) + s(SQRT_ELEV) + CANCOV + s(SQRT_TOTCWD) + s(WELLF) + s(WELLN) + s(OLDWDLD) + s(DISTWOOD) + s(Annprec) + s(OLDWDLD:DISTWOOD) + (1|fSITE), family = poisson, data = BIOFOR2) with interaction of s(OLDWDLD:DISTWOOD). However I got this error message below but don't know what it means? (my data is composed of info for 150 plots) #I Warning messages: #2: In...

...hing looks OK. I have no missing values. e.g of data from str() below: 'data.frame': 51 obs. of 5 variables: $ BRYOSR : num 7 13 10 3 13 8 4 4 7 10 ... $ CANCOV : num 16.7 36.7 78.4 20 81.7 93.4 43.4 88.4 30 81.7 ... $ SRTTOTCWD : num 0 0 0.4 0 0 0.1 0 0.3 0 0.3 ... $ WELLN : num 3.3 2.4 3.9 3.4 3.6 4.8 4.8 4.6 4.5 3.9 ... $ SiteDISTWOOD: num 800 1001 100 400 1001 ... Model I'm running is GAM with only one smoother on a continous variable (that has non linear relationship with response and 2 interactions and is Poisson distributed (response is count data...

My GAMM model is to find drivers of species richness in forests is gamm1<- gamm(Total Species Richness ~ fROT + s(PH) + s(LOI) + ASP + s(SQRT_ELEV) + CANCOV + s(SQRT_TOTCWD) + s(WELLF) + s(WELLN) + s(OLDWDLD) + s(DISTWOOD) + s(Annprec), random=list (fSITE =~1), family = poisson, data = BIOFOR3) My issues are that the validation graphs are using methods I'm unfamiliar with e.g. square rooting values and Pearson's residuals. I'm following as best I can recommendations in Wood 20...