![]() I don't see anything fishy in the data or the models. Model failed to converge: degenerate Hessian with 1 negative eigenvaluesģ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :Ĥ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :ĥ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :Ħ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :ħ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :Ĩ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Fixed term is "(Intercept)"ġ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :Ģ: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Any help or suggestion would be appreciated. dredge works fine if I use yld as response. For clarification, yld.res is residual that are obtained from the linear regression of yld against year for each state. ![]() I get the following error which I do not know why is happening. Stdz.model <- standardize(global.model,standardize.y = FALSE) Onset + wid + (1|state),data=dat,REML=FALSE) Global.model<-lmer(yld.res ~ rain + brk+ act + I constructed a global model: options(na.action = "na.fail") I am getting some error from the MuMIn::dredge function in R and do not know how to solve it. ![]()
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