[datatable-help] What is going on with R 3.1 ?

[Amy]

Hi Arun,

In 1.9.3 I get the "Error in vecseq(f__, len__, if (allow.cartesian) NULL
else as.integer(max(nrow(x), : Join results in 33 rows; more than 28 =
max(nrow(x),nrow(i))...." message and it doesn't assign the column (upon
`x[y, female:=female]`, so no, the error doesn't occur.

But as an aside, shouldn't it this command work?
If I have x with subjects a, a, b, c, d; y with genders for subjects a--f,
shouldn't x[y, female:=female] copy the female column from y to x,
duplicating as necessary?
Of course y[x] produces the table I'm after, but in the case that y has
extra columns I /don't/ want in the output and x has extra columns I /do/,
`y[x]` is then not the table I'm after. (But now we are straying into a
different question, my limited understanding of how to use data.table, as
opposed to the bug this thread is about).

PS - typo on the data.table Readmein the "if you get latex errors during
installation" bit:

devtools:::install_github("datat.able", ...)

"datat.able" --> "data.table".

cheers
Amy


On 20 June 2014 10:51, Arunkumar Srinivasan <aragorn168b at gmail.com> wrote:

> Hi,
>
> Could you let us know if you’re able to reproduce it in the devel version
> 1.9.3 <https://github.com/Rdatatable/data.table> as well?
>
>
>
> Arun
>
> From: mathematical.coffee mathematical.coffee at gmail.com
> Reply: mathematical.coffee mathematical.coffee at gmail.com
> Date: June 20, 2014 at 2:44:50 AM
> To: datatable-help at lists.r-forge.r-project.org
> datatable-help at lists.r-forge.r-project.org
> Subject:  Re: [datatable-help] What is going on with R 3.1 ?
>
> Hi all,
>
> Sorry to resurrect an old thread, but I've been experiencing these
> problems
> too and have come up with a reproducible example (for me anyway).
>
> Data.table 1.9.2, R 3.1.0
>
> I was trying to join some tables and got the usual "rerun with
> allow.cartesian=TRUE" message like Michele, and then got this error:
>
> Error in if (!is.null(lhs)) { : missing value where TRUE/FALSE needed
>
> However while I was trying to strip down my data to reproduce the error, I
> now consistently get this one instead:
>
> Error in `[.data.table`(x, y, `:=`(female, female)) :
> object 'bysubl' not found
>
>
> rather than the TRUE/FALSE one. But they seem to be related.
>
> * x has a column of subjects, some duplicated
> * y has a column of subjects, none duplicated, and some not present in x
> (all subjects of x are in y though).
> * y additionally has a binary column `female` that I wish to join into x
>
> (I know there are other ways to do this, but this is a stripped down
> example
> and seems to point out something going wrong in data.table so it is just
> an
> illustrative example):
>
> ```
> library(data.table)
> x=fread('x.csv')
> y=fread('y.csv')
> setkey(x, subject)
> setkey(y, subject)
>
> x[y]
> # Error in vecseq(f__, len__, if (allow.cartesian) NULL else
> as.integer(max(nrow(x), :
> # Join results in 33 rows; more than 28 = max(nrow(x),nrow(i)). Check for
> duplicate key values in i, each of which join to the same group in x over
> and over again. If that's ok, try including `j` and dropping `by`
> (by-without-by) so that j runs for each group to avoid the large
> allocation.
> If you are sure you wish to proceed, rerun with allow.cartesian=TRUE.
> Otherwise, please search for this error message in the FAQ, Wiki, Stack
> Overflow and datatable-help for advice.
>
> x[y, female:=female]
> Error in `[.data.table`(x, y, `:=`(female, female)) :
> object 'bysubl' not found
> ```
>
> I get the above reproducibly with this dataset.
>
> From now onwards, if I type in 'x' or 'y' into the prompt I get nothing
> printed at all. Additionally:
>
> ```
> tables()
> # Error in gettext(domain, unlist(args)) : invalid 'string' value
> # Error: argument "finally" is missing, with no default
> ```
>
> The only solution is to restart the R session.
>
> Note: this *doesn't* occur if the column I try to merge (`female` in this
> case) is continuous, for example. I can only get it if it's logical.
>
> I've attached x.csv and y.csv to this email for you to play with.
>
> I think it might be possible to strip down the tables to less rows (x has
> 28, y has 26) but in my (not exhaustive) attempts to do so, I didn't get
> this particular error.
>
> x.csv <http://r.789695.n4.nabble.com/file/n4692401/x.csv>
> y.csv <http://r.789695.n4.nabble.com/file/n4692401/y.csv>
>
>
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/What-is-going-on-with-R-3-1-tp4689002p4692401.html
> Sent from the datatable-help mailing list archive at Nabble.com.
> _______________________________________________
> datatable-help mailing list
> datatable-help at lists.r-forge.r-project.org
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.r-forge.r-project.org/pipermail/datatable-help/attachments/20140620/c92f540d/attachment-0001.html>