You are right.
On Wed, Aug 28, 2019 at 10:34 AM Jeff Newmiller <jdnew...@dcn.davis.ca.us>
wrote:
> Why do you need to do this? It sounds like homework. Using multiple
> columns as lookup keys is the normal way this is handled.
>
> On August 28, 2019 7:10:34 AM PDT, Alex Naverniak <stopro...@gmail.com>
> wrote:
> >Thank you.
> >The problem is that I need multiple same size data structures for each
> >item
> >name. For example: Unique item name -"Table" has several (Lets say 5)
> >subitems of 3 items in each("Size", "Price", "Qty"); Another item
> >"Chair"
> >has 4 subitems of the same structure (3 positions in each), etc. That
> >list
> >of furniture unique items may have indefinite number of triple
> >subitems. I
> >need to hace access to each position of subitem like [[1]][[3]][[2]]. I
> >also need to dynamically add subitems and furniture items. The total
> >size
> >of furniture inventory is not known at the beginning. I hope it makes
> >sense. Thank you.
> >
> >On Wed, Aug 28, 2019 at 2:18 AM Jeff Newmiller
> ><jdnew...@dcn.davis.ca.us>
> >wrote:
> >
> >> Perhaps
> >>
> >> dta <- data.frame( SKU=c("4950","8488","1159"),
> >>
> >Price=c(10,15,3),Qty=c(24,144,16),ID=c("10208473","38447769","43759115")
> >)
> >>
> >> Lists are not as easy to optimize performance with as tables are...
> >unless
> >> you have a specific reason to use them I would minimize your use of
> >> single-element items in lists.
> >>
> >> On August 27, 2019 9:49:28 PM PDT, Jim Lemon <drjimle...@gmail.com>
> >wrote:
> >> >Hi Alex,
> >> >At a guess you may want something like this:
> >> >
> >> >data.frame(item="SKU",price=10,qty=2,ID="00001")
> >> >
> >> >This produces a data frame with one row. You will probably want many
> >> >more rows.
> >> >
> >> >Jim
> >> >
> >> >On Wed, Aug 28, 2019 at 2:21 PM Alex Naverniak <stopro...@gmail.com>
> >> >wrote:
> >> >>
> >> >> Hi,
> >> >> I am trying to create Inventory structure with item SKU and 3
> >> >subitems like
> >> >> "Price"; "Qty"; "ID". I tried
> >> >list(SKU,list("Item1","Item2","Item3")). It
> >> >> seem not to work. Please help with ideas. Thanks.
> >> >> Alex
> >> >>
> >> >> [[alternative HTML version deleted]]
> >> >>
> >> >> ______________________________________________
> >> >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> >> >> PLEASE do read the posting guide
> >> >http://www.R-project.org/posting-guide.html
> >> >> and provide commented, minimal, self-contained, reproducible code.
> >> >
> >> >______________________________________________
> >> >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >> >https://stat.ethz.ch/mailman/listinfo/r-help
> >> >PLEASE do read the posting guide
> >> >http://www.R-project.org/posting-guide.html
> >> >and provide commented, minimal, self-contained, reproducible code.
> >>
> >> --
> >> Sent from my phone. Please excuse my brevity.
> >>
>
> --
> Sent from my phone. Please excuse my brevity.
>
[[alternative HTML version deleted]]
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