# svydesign fpc term in 2stage stratification [closed]

I am having some problems with svydesign() in R. My sample design is a 2 stage stratification.

ie.design=svydesign(id=~1,strata=~a+b,fpc=~fpc1+fpc2,data=x)


How should my fpc2 term be constructed? I having tried including the population size within each strata. i.e.

    library(survey)
library(dplyr)

new2=x %>% group_by(a,b) %>% summarise(Freq=n())

x=merge(x, new2, by=c("a","b"))

design=svydesign(id=~1,strata=~a+b,fpc=~fpc1+fpc2,data=x)

Error in popsize < sampsize : non-conformable arrays


## closed as off-topic by whuber♦Jun 15 '18 at 15:47

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• Welcome to CV. If you use code in libraries please load these libraries in your example code. This time I did it for you. – Ferdi Jun 15 '18 at 14:17