[R] sampling weights in package lme4

Dear All I am trying to include sampling weights in multilavel regression analysis using packege lme4 using following codes print(fm1 <- lmer(DC~sex+age+smoker+alcohol+fruits(1|setting), dataset,REML = FALSE), corr = FALSE) print(fm2 <- lmer(DC~sex+age+smoker+alcohol+fruits(1|setting), d

[R] PCA for assets based household income analysis (" hetcor" and "princomp")

I am doing Principal Component Analysis (PCA) on assets data for household income prediction. The problem is that the assets data are rank ordered (usually binary ... possess car/don't possess car), so the normal correlation is inappropriate for the calculation of the PCA. Instead one has to use