Displaying 20 results from an estimated 8000 matches similar to: "summary.nlme"
2009 Oct 15
2
Proper syntax for using varConstPower in nlme
Hello,
Excuse me for posting two questions in one day, but I figured it would be
better to ask my questions in separate emails. I will again give the caveat
that I'm not a statistician by training, but have a fairly decent
understanding of probability and likelihood.
As before, I'm trying to fit a nonlinear model to a dataset which has two main
factors using nlme. Within the dataset
2005 Feb 11
3
getAnywhere and functions starting with "." (PR#7684)
Full_Name: Mark Bravington
Version: 2.0.1
OS: Windows XP
Submission from: (NULL) (140.79.22.104)
'getAnywhere' crashes when its argument starts with a period:
> getAnywhere( '.onLoad')
Error in exists(x, envir, mode, inherits) :
invalid first argument
One fix might be to replace the line
if ( !is.null(f <- getS3method(gen, cl, TRUE))) {
with
if ( nchar( gen)
2009 Jan 22
1
convergence problem gamm / lme
Hope one of you could help with the following question/problem:
We would like to explain the spatial
distribution of juvenile fish. We have 2135 records, from 75 vessels
(code_tripnr) and 7 to 39 observations for each vessel, hence the random effect
for code_tripnr. The offset (‘offsetter’) accounts for the haul duration and
sub sampling factor. There are no extreme outliers in lat/lon. The model
2013 Nov 20
1
nlme function summary.lmList cannot be found with new versions
Hello,
I installed the newest version of R (3.0.2) as well as the newest version of
nlme (3.1-113) in order to use summary.lmList and other nlme functions. Once
loading the new library, lmList and summary.lm can be found, but a number of
additional functions cannot be found via command.
Versions installed and loaded are correct. Any suggestions on how to allow
for these functions of the new
2004 Nov 29
4
"non-visible" functions in return to methods()
Please point me to the documentation explaining why some of the functions
returned
by calling methods() are marked as "non-visible" and whether there is indeed
no way of
viewing the R code of such functions
thanks
Steve
_________________________________________________________________
2011 Aug 26
1
methods() not listing some S3 plot methods...?
Dear List,
This may be related to this email thread initiated by Ben Bolker last
month: https://stat.ethz.ch/pipermail/r-devel/2011-July/061630.html
In answering this Question on StackOverflow
http://stackoverflow.com/q/7195628/429846 I noticed that `methods()` was
not listing some S3 methods for `plot()` provided by the mgcv package.
At the time I wanted to check the development version of R as
2004 Aug 02
0
Returning singular nlme objects.
Hi everyone.
I'm working with nlme and I have a question regarding nlme fits that fail
because of singularity issues. Specifically, there a way to return an nlme
object when the estimation process runs into a singular matrix? For example,
can the results up to the point of an error such as "Error in
solve.default(pdMatrix(a, fact = TRUE)) : system is computationally
singular" or
2005 May 05
3
body of non-visible function
Hello,
Is there any possibility in R to see the body of the non-visible
function, for
example princomp?
If I do :
> methods(princomp)
so, I get that princomp.default and princomp.formula are non-visible
functions and
body(princomp.default) doesnt show it.
In particular, I guess I have a very nave question
Id like to see how scores calculation is implemented in the function
princomp.
2005 Feb 03
1
getAnywhere
Shouldn't this work?
> .a <- 5
> exists(".a")
[1] TRUE
> getAnywhere(".a")
Error in exists(x, envir, mode, inherits) :
invalid first argument
getAnywhere doesn't seem to like the "." prefix. Is this a bug?
Thanks,
Robert
Robert McGehee
Geode Capital Management, LLC
53 State Street, 5th Floor | Boston, MA | 02109
Tel: 617/392-8396
2007 Sep 21
2
getAnywhere
Hello,
How can I see a function called "+.dlm"?
> methods("+")
[1] +.Date +.dlm* +.POSIXt
Non-visible functions are asterisked
> getAnywhere("+.dlm")
Error in grep(pattern, x, ignore.case, extended, value, fixed, useBytes) :
invalid regular expression '+\.dlm'
Thanks in advance,
Giovanni
--
Giovanni Petris <GPetris at uark.edu>
2011 Mar 17
2
fitting gamm with interaction term
Hi all,
I would like to fit a gamm model of the form:
Y~X+X*f(z)
Where f is the smooth function and
With random effects on X and on the intercept.
So, I try to write it like this:
gam.lme<- gamm(Y~ s(z, by=X) +X, random=list(groups=pdDiag(~1+X)) )
but I get the error message :
Error in MEestimate(lmeSt, grps) :
Singularity in backsolve at level 0, block 1
2007 Feb 05
1
Build error with last R-devel tarball
Hi,
On Windows, with last R-devel tarball (r40647) from
ftp://ftp.stat.math.ethz.ch/Software/R/R-devel_2007-02-04.tar.gz
I get the following build error:
E:\biocbld\bbs-2.0-bioc\R\src\gnuwin32> make
...
...
---------- Making package utils ------------
adding build stamp to DESCRIPTION
installing NAMESPACE file and metadata
installing R files
Error in namespaceExport(ns, exports) :
2004 May 25
4
Object "silhouette.default" not found. But I knew that it is there.
Hi!
>library(cluster)
In this lib a function called silhoutte.default is defined
than on the R prompt it type
>silhouette.default
Error: Object "silhouette.default" not found
R1.9.0
The same error are at R1.8.1
And I knew that a function silhoutte.default are present.
But the same piece of code works in R1.6.2
???
Eryk
Dipl. bio-chem. Eryk Witold Wolski @
2012 May 28
3
Factanal fits
Greetings, all:
I am using factanal in R.
When I enter a matrix or a formula, the print method winds up with something like this:
Test of the hypothesis that 6 factors are sufficient.
The chi square statistic is 28.1 on 22 degrees of freedom.
The p-value is 0.172
But when I enter a covmat, the print method winds up with something like this:
The degrees of freedom for the model is 22 and the
2010 May 19
2
How to look up source code for cor.test()
Dear all,
how can I check the source code for a hidden function like cor.test()?
At the moment I get ...
> cor.test
function (x, ...)
UseMethod("cor.test")
<environment: namespace:stats>
Thanks in advance,
Will
2008 Jul 18
2
source code functions
>na.contiguous
function (object, ...)
UseMethod("na.contiguous")
<environment: namespace:stats>
this is what I get when I look for the source code for some functions- Is
there a way to look at the source code?
--
Let's not spend our time and resources thinking about things that are so
little or so large that all they really do for us is puff us up and make us
feel like
2004 Feb 14
6
Beginner's question about t.test()
Dear All,
I am doing some exercise in statistics textbook on comparison of two
experimental means. Is it possible to use t.test() do t-test when I have
only two means, sample size, two standard deviations ? (no raw data).
Thanks.
Pramote
2004 Sep 27
2
Getting code for functions
Hello
Pardon for the elementary question, I did try searching the archives
with various terms, but to no avail. I am using R1.9.1 on a windows
machine
One of the great advantages of R (to me, anyway) is being able to see
the code for a function , e.g. by typing sd one sees the code for
getting a standard deviation.
However, for many functions this only provides info. including
UseMethod, eg.
2005 Jan 26
2
Source code for "extractAIC"?
Dear R users:
I am looking for the source code for the R function extractAIC. Type the
function name doesn't help:
> extractAIC
function (fit, scale, k = 2, ...)
UseMethod("extractAIC")
<environment: namespace:stats>
And when I search it in the R source code, the best I can find is in (R
source root)/library/stats/R/add.R:
extractAIC <- function(fit, scale, k = 2,
2005 Jan 03
4
Inspecting R functions
In S-Plus, I can look at the structure of a function (for example, hist)
simply by entering
hist <RETURN>
however, if I do this in R, I get the response
function (x, ...)
UseMethod("hist")
<environment: namespace:graphics>
How can I inspect the structure of a function in R?
-------------------------------
Richard Dybowski
143 Village Way