[datatable-help] datatable-help Digest, Vol 52, Issue 7

[Mikkel Grum]

Thanks Michael. I had written Depends in all caps in the DESCRIPTION
file and assumed that calling library(data.table) within the function
would override that anyway.

Greatly appreciated

On 11 June 2014 05:00,
<datatable-help-request at lists.r-forge.r-project.org> wrote:
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> Today's Topics:
>
>    1. data.table error: invalid subscript type, except it isn't.
>       (Mikkel Grum)
>    2. Re: data.table error: invalid subscript type, except it
>       isn't. (Michael Smith)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 10 Jun 2014 12:17:54 -0500
> From: Mikkel Grum <mikkel at scarab-solutions.com>
> To: datatable-help at lists.r-forge.r-project.org
> Subject: [datatable-help] data.table error: invalid subscript type,
>         except it isn't.
> Message-ID:
>         <CAPeJDOSDqfa5JqPjchw=mkU_UUW0Q5dL9ab2t5MBFAxkZ2xJiw at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Hello data.table useRs
>
> I've written a function myTable that I've included in a package I've
> made myself (RAPI). The function calls library(data.table) and does a
> number of things to the data using the data.table functionality. On
> its own (cutting and pasting the code into R) the function works well,
> but when I install the package and then try to run the function, I get
> the following error
>
>> library(RAPI)
>> myTable(11, '2014-06-09')
> data.table 1.9.2  For help type: help("data.table")
> Error in `[.default`(x, i) : invalid subscript type 'list'
>
>> sessionInfo()
> R version 3.1.0 (2014-04-10)
> Platform: x86_64-pc-linux-gnu (64-bit)
>
> locale:
>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
>  [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] data.table_1.9.2 RODBC_1.3-10     RAPI_1.0
>
> loaded via a namespace (and not attached):
> [1] plyr_1.8.1    Rcpp_0.11.1   reshape2_1.4  stringr_0.6.2
>
>
> The line that fails is
> stopsperrow <- myData[, length(timestamp), by = list(name, house, row)]
>
> However, if I type the function name, myTable, and cut and paste the
> function from the console back into the console, the command produces
> the desired output without any hiccups! In other words the function in
> the package is OK, but something about the environment isn't right -
> if that's the right way to put it.
>
> Any ideas for where I should be looking, or what I should be trying?
>
> Regards
> Mikkel
>
> --
> Mikkel Grum, PhD
> Director, Research and Development
>
> ParqueSoft  Calle 25 #127-220  Cali, Colombia
> cel +57 313 730 1976
> website | map | email
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 11 Jun 2014 09:38:28 +0800
> From: Michael Smith <my.r.help at gmail.com>
> To: Mikkel Grum <mikkel at scarab-solutions.com>
> Cc: datatable-help at lists.r-forge.r-project.org
> Subject: Re: [datatable-help] data.table error: invalid subscript
>         type, except it isn't.
> Message-ID: <5397B314.6030506 at gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Have you imported data.table into your RAPI package?
>
> M
>
> On 06/11/2014 01:17 AM, Mikkel Grum wrote:
>> Hello data.table useRs
>>
>> I've written a function myTable that I've included in a package I've
>> made myself (RAPI). The function calls library(data.table) and does a
>> number of things to the data using the data.table functionality. On
>> its own (cutting and pasting the code into R) the function works well,
>> but when I install the package and then try to run the function, I get
>> the following error
>>
>>> library(RAPI)
>>> myTable(11, '2014-06-09')
>> data.table 1.9.2  For help type: help("data.table")
>> Error in `[.default`(x, i) : invalid subscript type 'list'
>>
>>> sessionInfo()
>> R version 3.1.0 (2014-04-10)
>> Platform: x86_64-pc-linux-gnu (64-bit)
>>
>> locale:
>>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>>  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>>  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
>>  [9] LC_ADDRESS=C               LC_TELEPHONE=C
>> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>>
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>
>> other attached packages:
>> [1] data.table_1.9.2 RODBC_1.3-10     RAPI_1.0
>>
>> loaded via a namespace (and not attached):
>> [1] plyr_1.8.1    Rcpp_0.11.1   reshape2_1.4  stringr_0.6.2
>>
>>
>> The line that fails is
>> stopsperrow <- myData[, length(timestamp), by = list(name, house, row)]
>>
>> However, if I type the function name, myTable, and cut and paste the
>> function from the console back into the console, the command produces
>> the desired output without any hiccups! In other words the function in
>> the package is OK, but something about the environment isn't right -
>> if that's the right way to put it.
>>
>> Any ideas for where I should be looking, or what I should be trying?
>>
>> Regards
>> Mikkel
>>
>
>
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>
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> End of datatable-help Digest, Vol 52, Issue 7
> *********************************************



-- 
Mikkel Grum, PhD
Director, Research and Development

ParqueSoft  Calle 25 #127-220  Cali, Colombia
cel +57 313 730 1976
website | map | email