[datatable-help] R Studio Interactions with data.table

[Arunkumar Srinivasan]

Zachary,
Fixed in #1269 (v1.9.3). Please do write back if you still experience the
issue after update.


On Sun, Apr 27, 2014 at 9:48 PM, Arunkumar Srinivasan <aragorn168b at gmail.com
> wrote:

> Zack,
> I'm able to reproduce the crash and the occasional warning. Will look into
> it - filed #5647<https://r-forge.r-project.org/tracker/index.php?func=detail&aid=5647&group_id=240&atid=975>.
> Thanks for reporting.
> Arun.
>
>
> On Tue, Apr 22, 2014 at 8:07 PM, Zachary Long <long at dc-energy.com> wrote:
>
>> Hello,
>>
>> I was wondering if an error like this had been addressed before. I am
>> using data table 1.9.2.
>>
>> It appears that the error has to do with the interaction with R-Studio.
>> When I run
>>
>> library(data.table)
>>
>> dt<-data.table(strip="Nov08",date=c("2006-08-01","2006-08-02","2006-08-03","2006-08-04","2006-08-07",
>>
>>                                     "2006-08-08","2006-08-09","2006-08-10","2006-08-11","2006-08-14"))
>> dt[,forward_date:=c(rep(NA,5),date),by='strip']
>>
>>
>> The result I expect is below, along with a warning message.
>>
>> strip       date forward_date
>>  1: Nov08 2006-08-01           NA
>>  2: Nov08 2006-08-02           NA
>>  3: Nov08 2006-08-03           NA
>>  4: Nov08 2006-08-04           NA
>>  5: Nov08 2006-08-07           NA
>>  6: Nov08 2006-08-08   2006-08-01
>>  7: Nov08 2006-08-09   2006-08-02
>>  8: Nov08 2006-08-10   2006-08-03
>>  9: Nov08 2006-08-11   2006-08-04
>> 10: Nov08 2006-08-14   2006-08-07
>>
>>
>> However, I don't get this.
>>
>> 1 of two things can happen.
>>
>> 1. My R-Studio will completely crash without warning. All unsaved
>> information is lost.
>> 2. I can get "Error: Value of SET_STRING_ELT() must be a 'CHARSXP' not a
>> 'character'" "In addition:Lost warning messages"
>>
>> Do you know what is the cause here? It seems related to memory
>> allocation, or something under the hood relating to the interaction of
>> R-Studio and data table.
>>
>> Zach
>>
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>>
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>>
>
>
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