[R] Problem in calculation of subpopulation mean in Survey package (Specify survey design with replicate weights)
ajdamico at gmail.com
Sat Dec 24 12:00:47 CET 2016
hi, please revise your minimal reproducible example. the objects `W` and
`bootstrap.results` do not exist. thanks
On Fri, Dec 23, 2016 at 4:56 PM, Kristi Glover <kristi.glover at hotmail.com>
> Hi R users,
> I got a problem when I was trying to calculate the population mean for
> different groups (classes) in using "svrepdesign", It worked when I used
> entire rows but when I introduced by classes (groups or strata), it did
> not work out. I read several documents but I could not figure it out to the
> fix the problem.
> Actually, I do have about 500 data points (rows) in which there are
> several classes (groups). I developed the design using the svrepdesign, but
> when I introduced group in calculating mean, it says
> ""Error in qr.default(weights(design, "analysis"), tol = 1e-05) :
> NA/NaN/Inf in foreign function call (arg 1)"
> I think I have to introduce groups in the design and I tried it different
> ways but it did not work it out. Would you mind to give some hints?I would
> be very grateful if you could give some hints.
> here I have attached a example (format of the data) and the code I used.
> Thanks for your help.
> have a great holidays.
> dat<-structure(list(ID = 1:6, group = structure(c(8L, 7L, 7L, 8L,
> 7L, 7L), .Label = c("groupA", "groupB", "groupC", "groupD", "groupE",
> "groupF", "groupG", "groupH"), class = "factor"), ProbSelect = c(0.72,
> 0.62, 0.62, 0.72, 0.72, 0.62), density = c(28, 227, 65, 132,
> 13, 227), totalSampled = c(96L, 96L, 96L, 96L, 96L, 96L), pop = c(166L,
> 166L, 166L, 166L, 166L, 166L), wgt = c(2.42, 2.79, 2.79, 2.42,
> 2.42, 2.79)), .Names = c("ID", "group", "ProbSelect", "density",
> "totalSampled", "pop", "wgt"), row.names = c(NA, 6L), class = "data.frame")
> design_dat<-svrepdesign(data=dat, type="bootstrap", weights =
> I(1/dat$ProbSelect), repweights=W[,-1],scale=bootstrap.results$scale,
> rscale=bootstrap.results$rscales, combined.weights=TRUE)
> svymean(~ density,design=subset(design_dat, group=='groupH'),na.rm=T,
> "Error in qr.default(weights(design, "analysis"), tol = 1e-05) :
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