[R] Treating a vector of characters as object names to create list

[Bert Gunter]

Thank you, Dénes. Better yet.

-- Bert
Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Sun, Sep 4, 2016 at 4:13 PM, Dénes Tóth <toth.denes at ttk.mta.hu> wrote:
>
>
> On 09/05/2016 12:07 AM, Bert Gunter wrote:
>>
>> Time for an R tutorial or two to learn how to use the "apply" family
>> in R. I think what you want is:
>>
>> merged_list <- lapply(merging, get)
>>
>
> Or even:
> named_merged_list <- mget(merging)
>
> Anyway, probably you could arrive to a list of parameters directly. (E.g.,
> if you import the parameter values from an external source or if they are
> the return values of a function, etc.).
>
>>
>> -- Bert
>>
>>
>>
>> Bert Gunter
>>
>> "The trouble with having an open mind is that people keep coming along
>> and sticking things into it."
>> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>>
>>
>> On Sun, Sep 4, 2016 at 2:57 PM, Ryan Utz <utz.ryan at gmail.com> wrote:
>>>
>>> Hello,
>>>
>>> I have a vector of characters that I know will be object names and I'd
>>> like
>>> to treat this vector as a series of names to create a list. But, for the
>>> life of me, I cannot figure out how to treat a vector of characters as a
>>> vector of object names when creating a list.
>>>
>>> For example, this does exactly what I want to do (with
>>> 'merged.parameters'
>>> as the end goal):
>>>
>>> ###
>>> merging=c('alkalinity','iron')
>>> alkalinity=c('39086','29801','90410','00410')
>>> iron=c('01045','01046')
>>> merged.parameters=list(alkalinity,iron)
>>> ###
>>>
>>> But, say I have many, many parameters in 'merging' beyond alkalinity and
>>> iron and I'd like to just cleanly turn the elements in 'merging' into a
>>> list. This does not work:
>>>
>>> ###
>>> merged.parameters=list(get(merging))
>>> ###
>>>
>>> because it's only grabbing the first element of 'merging', for some
>>> reason.
>>> Any advice? This feels like it really should be easy...
>>>
>>> --
>>>
>>> Ryan Utz, Ph.D.
>>> Assistant professor of water resources
>>> *chatham**UNIVERSITY*
>>> Home/Cell: (724) 272-7769
>>>
>>>          [[alternative HTML version deleted]]
>>>
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>>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>