[R] Loop over rda list files and using the attach function

[Juan Ceccarelli Arias]

The attach(get(yyz)) option i tried and it worked. The only issue, is that
when i'm  trying to export the results, it takes a lot of time.
Considerably more than Stata. Also, the computer almost collapses for a
task which isn't so exhausting for my PC station.
Im dubious...

On Tue, Aug 30, 2016 at 3:42 PM, <ruipbarradas at sapo.pt> wrote:

> Hello,
>
> Try
>
> attach(get(yyz))
>
> Hope this helps,
>
> Rui Barradas
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> Citando Juan Ceccarelli Arias <jfca283 at gmail.com>:
>
> Hi.
>> I need to loop over rda files.
>> I generated the list of them.
>> That's ok. The problem is that the name of the files are as yyyy_mm (eg
>> 2010_01 is january or 2010, 2016_03 is march of 2016).
>> So, when i try to use the attach function to create a simple table(age,
>> sex) it fails.
>> The only way to attach a file as is using
>> attach(`2016_03`)
>> The text above i have no idea how to declare it in my code below
>>
>>
>> dd=list.files("C:/Users/Me/r", pattern="rda$", full.names=F)
>> for (i in 1:length(dd)) {
>> yyz=load(dd[i])
>> attach(yyz)
>> table(age, sex)
>> rm(list=yyz)
>>
>> }
>> This is the error it declares the loop:
>> Error in attach(yyz) : file '2013_02' not found
>>
>>
>> Thanks for your help and time
>>
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>>
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>> and provide commented, minimal, self-contained, reproducible code.
>>
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