zoo has a NAMESPACE which restricts access to the
internals of the package except for explicitly exported items.
zoo exports plot.zoo as an S3 method so that the plot generic
can find it. It is also possible to simply export a function
not specifically as an S3 method in which case it will be
visi
Gabor, maybe I am not understanding it right. I was thinking for example
something like how a call to plot actually calls plot.zoo when zoo is
loaded. And a specific call to plot.zoo would not work, etc. One would think
that plot and plot.zoo are separate and that one could call the parent as
well
If you believe that certain changes intended only to affect the local
environment nevertheless affect the global environment please give a
code example.
On Feb 6, 2008 12:11 PM, tom soyer <[EMAIL PROTECTED]> wrote:
> Thanks Hardley. I see what you mean. You are right, I am not an expert in
> oop A
Thanks Hardley. I see what you mean. You are right, I am not an expert in
oop AND I don't really know how R oo works, so certainly I shouldn't be
making any sweeping statement. I was just thinking about the issue of local
vs. global, i.e. changes intended for the local environment shouldn't affect
On Feb 6, 2008 10:13 AM, tom soyer <[EMAIL PROTECTED]> wrote:
> Thanks Gabor. I guess true oo encapsulation is not possible in R.
Before making such a claim, I would encourage you to actually learn
what oo means. A couple of good readings are:
Structure and Interpretation of Computer Programs.
h
Thanks Gabor. I guess true oo encapsulation is not possible in R.
It seems that there is an IDE for S+ in Eclipse...
On 2/6/08, Gabor Grothendieck <[EMAIL PROTECTED]> wrote:
>
> On Feb 6, 2008 9:45 AM, tom soyer <[EMAIL PROTECTED]> wrote:
> > Thanks Gabor for illustrating the basics oop in R us
"tom soyer" <[EMAIL PROTECTED]> writes:
> (1) how do I encapsulate the generics? i.e., if a class has 100 methods,
> then does it mean 100 generics would be dumped in the global environment?
> Or, is it possible to define a local environment and restrict the generics
> from one class to a particula
On Feb 6, 2008 9:45 AM, tom soyer <[EMAIL PROTECTED]> wrote:
> Thanks Gabor for illustrating the basics oop in R using S3. Maybe I didn't
> have the right documents, but you example taught me more about oop in R than
> everything else I read combined! Thanks for the tip on R.oo, I plan to check
> i
Thanks Gabor for illustrating the basics oop in R using S3. Maybe I didn't
have the right documents, but you example taught me more about oop in R than
everything else I read combined! Thanks for the tip on R.oo, I plan to check
it out later.
I have a few followup questions...
(1) how do I encaps
On Tue, 5 Feb 2008, Barry Rowlingson wrote:
> Duncan Murdoch wrote:
>
>> Another problem is that there are two different class systems in R:
>> sometimes calls S3 and S4 (because of the versions of S where they were
>> introduced). You were reading about S3.
>
> There's three different class sys
On Feb 5, 2008 6:06 AM, Barry Rowlingson <[EMAIL PROTECTED]> wrote:
> Duncan Murdoch wrote:
>
> > Another problem is that there are two different class systems in R:
> > sometimes calls S3 and S4 (because of the versions of S where they were
> > introduced). You were reading about S3.
>
> There'
Duncan Murdoch wrote:
> Another problem is that there are two different class systems in R:
> sometimes calls S3 and S4 (because of the versions of S where they were
> introduced). You were reading about S3.
There's three different class systems if you also include the R.oo
add-on package[1
On Feb 5, 2008 9:09 AM, Gabor Grothendieck <[EMAIL PROTECTED]> wrote:
> This illustration uses S3. Note that functions do not modify their arguments
> so to modify an object we have to pass it to the method and then pass the
> object back. There is also another system called S4 which involves typ
This illustration uses S3. Note that functions do not modify their arguments
so to modify an object we have to pass it to the method and then pass the
object back. There is also another system called S4 which involves typing
of arguments and there are packages proto and R.oo which provide differe
On 2/5/2008 8:21 AM, tom soyer wrote:
> Hi,
>
> I read section 5, oop, of the R lang doc, and I am still not sure I
> understand how to build a class in R for oop. I thought that since I
> understand the oop syntex of Java and VB, I am wondering if the R programmig
> experts could help me out by c
Hi,
I read section 5, oop, of the R lang doc, and I am still not sure I
understand how to build a class in R for oop. I thought that since I
understand the oop syntex of Java and VB, I am wondering if the R programmig
experts could help me out by comparing and contrasting the oop syntex in R
with
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