[datatable-help] =?utf-8?Q?=60with=3DF=60_?=in the `i` Argument

[Arunkumar Srinivasan]

Already got the notification. Thanks Michael.

Arun

From: Michael Smith my.r.help at gmail.com
Reply: Michael Smith my.r.help at gmail.com
Date: June 15, 2014 at 11:15:55 AM
To: Arunkumar Srinivasan aragorn168b at gmail.com
Cc: G See gsee000 at gmail.com, datatable-help at lists.r-forge.r-project.org datatable-help at lists.r-forge.r-project.org
Subject:  Re: [datatable-help] `with=F` in the `i` Argument  

Hi Arun,  

Filed here:  
https://github.com/Rdatatable/data.table/issues/696  

Thanks,  
M  

On 06/15/2014 04:11 PM, Arunkumar Srinivasan wrote:  
> Michael,  
>  
> Thanks. Replacing |order| with |base:::order| seems to give the right  
> result. So, I’d say this is a case that seem to have escaped current  
> tests. So, yes, bug. Could you please file as one here  
> <https://github.com/Rdatatable/data.table/issues>?  
>  
>  
> Arun  
>  
> From: Michael Smith my.r.help at gmail.com <mailto:my.r.help at gmail.com>  
> Reply: Michael Smith my.r.help at gmail.com <mailto:my.r.help at gmail.com>  
> Date: June 15, 2014 at 5:02:46 AM  
> To: G See gsee000 at gmail.com <mailto:gsee000 at gmail.com>  
> Cc: datatable-help at lists.r-forge.r-project.org  
> datatable-help at lists.r-forge.r-project.org  
> <mailto:datatable-help at lists.r-forge.r-project.org>  
> Subject: Re: [datatable-help] `with=F` in the `i` Argument  
>  
>> Devs,  
>>  
>> Is this a bug? It works in 1.9.2 but not in the 1.9.3 development  
>> version:  
>>  
>> DT <- data.table(a = 1:4, b = 8:5)  
>> for (i in c("a", "b"))  
>> print(DT[order(DT[, i, with = FALSE])])  
>>  
>> Error in forder(DT, DT[, i, with = FALSE]) :  
>> Column '1' is type 'list' which is not supported for ordering currently.  
>>  
>>  
>> Thanks,  
>>  
>> M  
>>  
>>  
>> On 05/31/2014 12:44 PM, G See wrote:  
>> > Hi Michael,  
>> >  
>> > I would use get()  
>> >  
>> > DT <- data.table(a = 1:4, b = 8:5)  
>> > for (i in c("a", "b"))  
>> > print(DT[order(get(i))])  
>> >  
>> > For what it's worth, your solution doesn't seem to work in data.table  
>> > 1.9.3 (svn rev. 1278):  
>> >  
>> >> for (i in c("a", "b"))  
>> > + print(DT[order(DT[, i, with = FALSE])])  
>> > Error in forder(DT, DT[, i, with = FALSE]) :  
>> > Column '1' is type 'list' which is not supported for ordering currently.  
>> >  
>> >  
>> > HTH,  
>> > Garrett  
>> >  
>> > On Fri, May 30, 2014 at 11:01 PM, Michael Smith <my.r.help at gmail.com> wrote:  
>> >> All,  
>> >>  
>> >> I'm trying to order the rows according to several columns at a time:  
>> >>  
>> >> DT <- data.table(a = 1:4, b = 8:5)  
>> >> for (i in c("a", "b"))  
>> >> print(DT[order(i), with = FALSE])  
>> >>  
>> >> It doesn't work, since `with` seems to be about the `j` argument, but  
>> >> not the `i` argument, according to `?data.table`.  
>> >>  
>> >> I found the following workaround, but wonder whether there is a more  
>> >> elegant way to do it:  
>> >>  
>> >> for (i in c("a", "b"))  
>> >> print(DT[order(DT[, i, with = FALSE])])  
>> >>  
>> >> Thanks,  
>> >> M  
>> >> _______________________________________________  
>> >> 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  
>> _______________________________________________  
>> datatable-help mailing list  
>> datatable-help at lists.r-forge.r-project.org  
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>>  
>  
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