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

[Arunkumar Srinivasan]

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 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>  



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