[R] Help with Bootstrap function.
Chong Gu
chong at stat.purdue.edu
Thu Jan 31 15:20:58 CET 2002
Date: Thu, 31 Jan 2002 15:34:55 +0200
From: "Husam Alqamy" <alqamy at lycos.com>
Mime-Version: 1.0
X-Sent-Mail: off
Reply-To: alqamy at lycos.com
X-Mailer: MailCity Service
X-Priority: 3
X-Sender-Ip: 213.131.66.41
Organization: Lycos Mail (http://mail.lycos.com:80)
Content-Type: text/plain; charset=us-ascii
Content-Language: en
Content-Transfer-Encoding: 7bit
Sender: owner-r-help at stat.math.ethz.ch
Precedence: SfS-bulk
Dear List
I am using R with mcgv package to model spatial variation in density estimates of dorcas gazelle in Sinai. I have 59 points of data and 4 explanatory variables(distance from mountain edge, camel presence, Latitude & Longitude). I want to test the model fir via bootstraping. I have used the jacknife bootstraping but it have the limitation of allowing only 58 trials. I tried to use the bootstrap function in R but I couldn;t understand the help file description. Please forgive my novice with such advance statistics since I am a biologist.
I would appreciate any help on advicing on how to use the bootstrap function in R.
Thanks in advance
Husam El Alqamy
----------------------------------------
Biologist Ranger
St. Katherine Protectorate
South Sinai,
EGYPT
----------------------------------------
tel 002-069-470032
Fax 002-069-470033
----------------------------------------
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Just a off-topic comment. With only 59 points but 4 variables, you
are stretched very very thin using a nonparametric method. Bootstrap
isn't going to bring in more information.
If I were you, I would try to find some parametric model to fit to the
data.
Chong Gu
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
More information about the R-help
mailing list