Displaying 20 results from an estimated 2000 matches similar to: "GAM with Locfit components"
1998 Mar 17
0
R-beta: locfit -> CRAN
The locfit library is now available through CRAN, in the
Contributed R Code directory. Locfit fits local regression,
likelihood and density estimation models, in the spirit
of loess but with many additional features. To install,
unpack the locfit_19980309.tar.gz file, and
R INSTALL locfit
Most of the functionality and examples on my home page
http://cm.bell-labs.com/stat/project/locfit/ should
1998 Mar 17
0
R-beta: locfit -> CRAN
The locfit library is now available through CRAN, in the
Contributed R Code directory. Locfit fits local regression,
likelihood and density estimation models, in the spirit
of loess but with many additional features. To install,
unpack the locfit_19980309.tar.gz file, and
R INSTALL locfit
Most of the functionality and examples on my home page
http://cm.bell-labs.com/stat/project/locfit/ should
2009 Dec 08
1
coefficients of each local polynomial from locfit
Hi list,
This was asked a couple of years ago but I can't find a resolution. Is
there any way to get the coefficients from one of the local polynomial fits
in locfit. I realize that locfit only constructs polynomials at a handful
of intelligently selected points and uses interpolation to predict any other
points. I would like to know the terms of the polynomials at these points.
It seems
2010 Jan 25
1
locfit questions/problems
Hi,
I'm trying to work through the examples and code in Loader's
LOCAL REGRESSION AND LIKELIHOOD, and have run into a problem
with the code for one sided smoothing and change point analysis
(p. 110-112).
The code, after loading locfit:
midp<-(1945:1988)+0.5
fitl<-locfit(thickness~left(year), data=penny, alpha=c(0,10), deg=1, ev=midp)
2009 Sep 04
1
Problem with locfit( ... , family="hazard")
I'm having difficulties with plot.locfit.3d, at least I think that is
the problem. I have a large dataframe (about 4 MM cases) and was
hoping to see a non-parametric estimate of the hazard plotted against
two variables:
> fit <- locfit(~surv.yr+ ur_protein + ur_creatinine, data=TRdta,
cens = 1-death, family = "hazard", xlim=c(0,10))
# it took somewhere between 1 and 2
2005 Apr 14
1
LOCFIT: What's it doing?
Dear R-users,
One of the main reasons I moved from GAUSS to R (as an econometrician) was because of the existence of the library LOCFIT for local polynomial regression. While doing some checking between my former `GAUSS code' and my new `R code', I came to realize LOCFIT is not quite doing what I want. I wrote the following example script:
2009 Jun 26
1
The Claw Density and LOCFIT
I am trying to reproduce Figure 10.5 of Loader's book: Local Regression and Likelihood. The code provided in the book does not seem to work.
I have managed (a while ago) to get the accompanied R-code for the figures in the book (file called lffigs.R) from somewhere - cannot find it on the web anymore. The code in the .R script file does not work either.
Could anybody please direct me in
1998 Mar 26
1
R-beta: problem with locfit
I installed the locfit package under Linux (gcc 2.7.2). Installation
was ok but
> x <- runif(200)
> y.compl <- 10*x*x*rgamma(200,3)
> med.y <- median(y.compl)
> cens <- ifelse(y.compl<=med.y,1,0)
> y <- cens * y.compl + (1-cens)*med.y
> library(locfit)
> m <- locfit(y~x,cens=cens,family="gamma")
/usr/local/src/R-0.61.1/bin/R.binary: can't
2000 Feb 22
2
Some problems with R and/or locfit
Hello,
Here is a problem I have had trying to install locfit, the package for
R.
I have already contacted Clive Loader who thinks the problem has more to
do with R than locfit, so here is the point :
The version of R I am currently running is R-base-0.90 that I installed
using the R-base-0.90.1-1.i386.rpm package.
I dowloaded the locfit package available at the CRAN site and ran : R
INSTALL
2010 Feb 25
1
locfit: max number of predictors?
Hi All,
In another thread Andy Liaw, who CRAN lists as locfit maintainer; said:
<quote>
From: "Liaw, Andy" <andy_liaw at merck.com>
To: "Guy Green" <guygreen at netvigator.com>; <r-help at r-project.org>
Subject: Re: Alternatives to linear regression with multiple variables
Date: 22 February 2010 17:50
You can try the locfit package, which I believe
2002 Mar 29
2
How to get the datapoints of an density estimation with locfit?
Hello!!!
I'm just a beginner of R.
I work with locfit to get the density from an numeric vector. It looks good when I plot the graph, but I need the output data of locfit.
For example I need somthing like that (only integer values for the input):
numeric vector (input of locfit) density (output of locfit)
1 0.05....
2 0.04..
3 0.01
...
Thank you for your help and your time.
2005 Nov 09
2
problem with Running Locfit
Dear R users,
i am using locfit package developed by loader in R software, my problem is that as i am doing independont forecast using locfit object , i am able to do independont forecast for more than one years simultaniously. But when i am doing one year forecast(single) this code is giving following error...
"Warning message:
'newdata' had 1 rows but variable(s) found have 24
2004 Nov 03
1
Kernel Density estimation - locfit package
Hello there,
I am presently using the locfit package in "R" and would appreciate some
help here. Could anyone tell me tell me how I can obtain the various
components (x and y values)of the density estimation after using the "R"
command "locfit"? For example, with the command
"fhat<-density(somename)" I can obtain the x and y values by simply
calling
2005 Oct 05
1
how do I write Rd file for this?
Dear R-devel,
I'm working on Prof. Loader's new version of locfit to try to get it
pass R CMD check. I'm almost there, but I have a problem with some Rd
files that I hope some one can help me resolve. Here's an example:
In the package there's a function called locfit.censor(). This function
can be used in a few different ways:
locfit.censor(x, y, cens, ...)
2000 Dec 06
0
Locfit
Dear,
I am doing some statistics analysis using R software. I am currently trying
to implement your library locfit. I am using Win NT and R1.1.1 version
obtained on the following Webmaster :
http://cm.bell-labs.com/cm/ms/departments/sia/project/locfit/index.html
When trying to run it, the following message appears:
**********
Error in .C("guessnv", nvm = integer(1), ncm =
2012 Mar 19
2
fitted values with locfit
Dear memberships,
I'm trying to estimate the following multivariate local regression model using the "locfit" package:
BMI=m1(RCC)+m2(WCC)
where (m1) and (m2) are unknown smooth functions.
My problem is that once I get the regression done I cannot get the fitted values of each of this smooth functions (m1) and (m2). What I write is the following
library(locfit)
data(ais)
2000 Sep 05
2
still problem with installation of locfit on DEC alphaev56-dec-osf4.0d
Dear all,
after building the R-1.1.1 from source on our alpha everything
seems to work, but locfit still hangs...
I installed locfit with install.packages(...),
the installation process went fine, but calling locfit() blocks the
R environment.
Has anybody got an idea howto get to the roots of this problem?
Thanks
M. Eger
--
+-------------------------------------------------------
| Marcus
2003 Mar 25
2
locfit troubles
Dear R experts,
We've been playing with the locfit package and are experiencing a
problem I am hoping for some help on.
We have a dataset of 13k points, one dimension of which is "judgment",
either 0 or 1, and the other "score", an arbitrary scalar (in this case
it's between .65 and .85). We use
2004 Jun 20
1
problem locfit
I have a problem with the use of locfit with censured data, when I carry out locfit by:
fitbmt<-locfit(~recur,data=BMTAGE11,cens=df.status,family="hazard",alpha=0.5)
it does not give me any message, but if I want to obtain the graph or even if I ask for (fitbmt) made it gives me the following message:
> fitbmt31
Problem: Object "fitbmt31" not found, while calling
2009 Mar 03
2
locfit smoothing question (package maintainer not reachable)
Dear list members,
I am trying to understand this output from the smoothing package locfit
(1.5-4, running on R 2.8.1 on Windows Vista 64 bit).
# sample code
x<-1:100
y<-rnorm(100)
fit<-locfit(y~x,family="gaussian") #default parameters are fine
plot(fit,band="global") #plot seems "reasonable", confidence bands use a
global estimate of variance