Hi Amy, Good to know that it’s not reproducible in 1.9.3. Matt already fixed it.
X[Y, LHS := RHS] can not exceed nrow(X) because this assignment is made by reference. If the join from X[Y] results in more than nrow(X), then X will be to be re-allocated entirely. If you only want those that match with X, then you should do: X[Y, female := i.female, nomatch=0L]. If instead you want all the rows from y, then you could do: x[y, allow.cartesian=TRUE]. Arun From: Amy [email protected] Reply: Amy [email protected] Date: June 20, 2014 at 3:01:50 AM To: Arunkumar Srinivasan [email protected] Cc: [email protected] [email protected] Subject: Re: [datatable-help] What is going on with R 3.1 ? 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 <[email protected]> wrote: Hi, Could you let us know if you’re able to reproduce it in the devel version 1.9.3 as well? Arun From: mathematical.coffee [email protected] Reply: mathematical.coffee [email protected] Date: June 20, 2014 at 2:44:50 AM To: [email protected] [email protected] 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 [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
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