Perfect!! Thanks a lot! Javier ------- > [EMAIL PROTECTED] wrote: >> Hi; >> It seems to me that has probably been asked in the past. But I cannot >> find >> the track. >> >> I usually need to extract elements from a list and contruct vector from >> them; e.g., to create a table. Perhaps there is a way to directly >> extract >> them without looping? >> Simple example: >> >> >>> S.lst >>> >> $sublist.1 >> $sublist.1$age >> [1] 24.58719 >> >> $sublist.1$weight >> [1] 60.82861 >> >> >> $sublist.2 >> $sublist.2$age >> [1] 32.39551 >> >> $sublist.2$weight >> [1] 59.46347 >> >> etc. >> >> I would like to extract, e.g., directly all weights element from each >> sublist without looping. I know it is possible to do this as: >> >> unlist(S.lst)[paste("sublist.",1:length(S.lst),".weight",sep="")] >> >> but there is not some short-cut? something like >> >> S.lst[[1:length(S.lst)]]$weight ? >> >> > I think this should do it: > > sapply(S.lst, "[[", "weight") > > -- > O__ ---- Peter Dalgaard Ă˜ster Farimagsgade 5, Entr.B > c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K > (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 > ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 > >
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