Re: [R] stringification magic in subset?
Beautiful. thank you. /ivo
> Try:
>
> methods("subset")
>
> which will point you to "subset.data.frame". The latter code will answer
> your questions.
>
> HTH,
>
> --sundar
>
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Re: [R] stringification magic in subset?
ivo welch said the following on 5/2/2007 8:13 AM:
> dear R wizards:
>
> I am trying to replace subset() with my own version that first checks
> that each name in the select statement has a corresponding name in the
> data set. preferably, it would have the same syntax and semantics as
> subset() otherwise.
>
> alas, subset works in interesting ways:
>
> subset(d, select=col1)
>
> works just like
>
> subset(d, select="col1")
>
> somehow, subset manages to "stringify" its argument in such cases. Is
> it possible to duplicate the subset method one-for-one?
>
> a minor question---where do I find the source definition such as that
> of subset(), which is defined in
>
>> subset
> function (x, ...)
> UseMethod("subset")
>
>
> any help, as usual, appreciated.
>
> regards,
>
> /ivo
>
> __
> R-help@stat.math.ethz.ch mailing list
> 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.
Try:
methods("subset")
which will point you to "subset.data.frame". The latter code will answer
your questions.
HTH,
--sundar
__
R-help@stat.math.ethz.ch mailing list
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.
[R] stringification magic in subset?
dear R wizards:
I am trying to replace subset() with my own version that first checks
that each name in the select statement has a corresponding name in the
data set. preferably, it would have the same syntax and semantics as
subset() otherwise.
alas, subset works in interesting ways:
subset(d, select=col1)
works just like
subset(d, select="col1")
somehow, subset manages to "stringify" its argument in such cases. Is
it possible to duplicate the subset method one-for-one?
a minor question---where do I find the source definition such as that
of subset(), which is defined in
> subset
function (x, ...)
UseMethod("subset")
>
any help, as usual, appreciated.
regards,
/ivo
__
R-help@stat.math.ethz.ch mailing list
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.
