R help - Mar 2006 - GAM using R tutorials?

Hi all,

I am trying to use GAM to work on some data... Are there any resources
providing hands-on tutorial/guide on how to do GAM on data in R?
Specifically, I am not sure about which model to choose, and smooth models
with which effective degree-of-freedom shall I use...

I knew there is a book titled: GAM: an introduction using R. Unfornately our
local library does not have it... so that's not an option given time
constraint.

Thanks a lot for your pointers!

Michael.

	[[alternative HTML version deleted]]

Have you looked at:

"An Introduction to R: Software for StatisticalModelling &
Computing" by
Petra Kuhnert and Bill Venables

which is available at http://cran.r-project.org/other-docs.html

Hope this helps.

Best,
Matthias

> 
> Hi all,
> 
> I am trying to use GAM to work on some data... Are there any 
> resources providing hands-on tutorial/guide on how to do GAM 
> on data in R? Specifically, I am not sure about which model 
> to choose, and smooth models with which effective 
> degree-of-freedom shall I use...
> 
> I knew there is a book titled: GAM: an introduction using R. 
> Unfornately our local library does not have it... so that's 
> not an option given time constraint.
> 
> Thanks a lot for your pointers!
> 
> Michael.
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at 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
>

On Tue, 2006-03-14 at 23:52 -0800, Michael wrote:
> Hi all,
> 
> I am trying to use GAM to work on some data... Are there any resources
> providing hands-on tutorial/guide on how to do GAM on data in R?
> Specifically, I am not sure about which model to choose, and smooth models
> with which effective degree-of-freedom shall I use...
> 
> I knew there is a book titled: GAM: an introduction using R. Unfornately
our
> local library does not have it... so that's not an option given time
> constraint.
> 
> Thanks a lot for your pointers!
> 
> Michael.
Michael,

Please learn to use the search tools provided for you! You have posted
numerous emails to the list recently, many of which you could have
solved for yourself if only you'd heeded peoples' advice and searched
for yourself.

For this problem;

1) I'd suggest to the local library that they might consider buying the
book, but in the meantime...

2) ...in R, do RSiteSearch("GAM") and look at the list shown in your
browser. The first hit is the help page for package mgcv. Look at the
references included on that help page - most are technical/statistical
papers, but a starting point might be the RNews article Simon Wood
wrote.

That should get yourself started. But if you'd done the search yourself,
you wouldn't have had to wait for someone on the list to do it for you.

Finally - Please read the posting guide - it is there for a reason.

HTH

G
-- 
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Gavin Simpson                     [T] +44 (0)20 7679 5522
ENSIS Research Fellow             [F] +44 (0)20 7679 7565
ENSIS Ltd. & ECRC                 [E] gavin.simpsonATNOSPAMucl.ac.uk
UCL Department of Geography       [W] http://www.ucl.ac.uk/~ucfagls/cv/
26 Bedford Way                    [W] http://www.ucl.ac.uk/~ucfagls/
London.  WC1H 0AP.
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Dear Templ (& Others),

Thank you for pointing out the contributed papers. It is one of those things
that I have been introduced to more than once, but I personally never
remembered to check the section out while in the acute phase of
"problem-can't do it-what the heck is going on." 

Dear Michael,

Regarding frustrating replies, those will happen. I lost sleep over such
things in the past, only to learn that I didn't really have time to get
caught up. It is normal when investing time and effort into a reply to want
some kind of assurance that some legwork has been done. I think Gavin just
didn't get the sought after assurance from your message. The reply may not
have been particularly useful to you, per say, but it did serve as a
reminder to a wider audience of subscribers who read posts.

Given that this is done over email, and given the huge diversity of
subscribers around the globe with different language histories, the error
rate in communication could only increase from that of your or my locale.
Hence, the importance of the posting guide & FAQs.

More often than not, however, I've later found replies that I previously
considered terse or inappropriate to be quite accurate. On the other side, I
walked through an R&D lab once & pointed out a solution to a router
configuration problem that the technician had been working on for a few
days. Having been trained on that one system, it was quite obvious what
needed to be fixed. I expected the technician to be grateful, but he never
spoke to me again! 

Well, that's my 2 cents. I do acknowledge that it wasn't requested. My
hope
is that someone out there in listland would find it useful, even if not you.
Yes, I guess I am having a conversation with the wind... 

Rgds,
KeithC.

Thu, 16 Mar 2006 00:26:46 -0800
Michael <comtech.usa at gmail.com>
Re: [R] GAM using R tutorials?

Hi Templ,

That's very helpful! Indeed I've printed out the gam portion and I am
digesting now...

Thank you so much!

I really appreicate your constructive and helpful advice!

Best,

Michael.


On 3/15/06
TEMPL Matthias <Matthias.Templ at statistik.gv.at>
wrote:
>
> Have you looked at:
>
> "An Introduction to R: Software for StatisticalModelling &
Computing" by
> Petra Kuhnert and Bill Venables
>
> which is available at http://cran.r-project.org/other-docs.html
>
> Hope this helps.
>
> Best,
> Matthias
Thu, 16 Mar 2006 00:25:56 -0800
Michael <comtech.usa at gmail.com>
Re: [R] GAM using R tutorials?

Interesting! Very interesting! You seem to assume that I haven't done
anything as you've listed below:

I have even listed a book that I was aware of but I could not find in our
local library... and doing some "research" and I have already started
playing with "gam", and everybody on earth knows that you can do
"?gam" and
"help.search()" in R to find info, but after I have done all those, I
still
feel that I need some more info&help...

I don't know how you reach your ungrounded conclusion?

I think you are wasting everybody's bandwidth and time by not providing
constructive suggestions but discouraging (and overly repetitive) comments
disregarding the effort a newbie had already paid...

I think you really need to consult posting guide yourself...

And remember, you can always remain silent -- you don't need to show off
that you are an experienced user and for newbie your first response is
always something like scolding: "why didn't you search?"

I strongly believe that your answer is inappropriate!!!