Displaying 20 results from an estimated 110 matches similar to: "mblm, confint problem"
2012 Oct 21
2
help speeding up simple Theil regression function
Hello,
I am working on a simple non-parametric (Theil) regression function and and
am following Hollander and Wolfe 1999 text. I would like some help making
my function faster. I have compared with pre-packaged version from "MBLM",
which isnt very fast either, but it appears mine is faster with N = 1000
(see results below). I plan on running this function repeatedly, and I
generally
2012 Mar 16
1
Change in behavior of update.views()?
I haven't seen this cryptic warning before:
> update.views('Robust')
Warning message:
In update.views("Robust") :
The following packages are not available: covRobust, distr, FRB, MASS, mblm, multinomRob, mvoutlier, quantreg, RandVar, rgam, RobAStBase, robfilter, RobLox, RobRex, robust, RobustAFT, robustbase, ROptEst, ROptRegTS, rrcov, sandwich, wle
>
2010 Dec 04
2
Error in calcCurveGrob(x, x$debug) : End points must not be identical
Hi All... I haven?t found mention of this error anywhere. I'm trying to
draw spline curves using grid graphics. Most of the time, I have no
problems, but I have some data sets that give the error in the subject line.
I'm not sure which end points are identical, but the end points passed to
the function are definitely not identical.
Any assistance appreciated! Bryan
tst <-
2007 Jan 12
2
Magnitude of trend in time series
Hello,
I am analyzing some climate time series data using the Mann Kendall package
and was wondering if there was a way to calculate the trend using Sen's
nonparametric estimator slope in R?
Thank you in advance,
Barry
_________________________
Barry Baker, Ph.D.
Global Climate Change Initiative
The Nature Conservancy
2424 Spruce St., Suite 100
Boulder, CO 80302
Tel: (303)-541-0322
Fax:
2007 Mar 26
1
Problem in loading all packages all at once
Hi All
Please see the Rprofile file which i have modified as follows and after
that when I start R then I see that R says to me "TRUE" for all the
packages implying that all loaded at once.
But when i try to use commands as simple as help("lm"), it doesnt work nor
any of the menu "Packages" is not working.
Although the regression using lm ( Y ~ X ) is working
2018 Jul 20
0
Should there be a confint.mlm ?
>>>>> steven pav
>>>>> on Thu, 19 Jul 2018 21:51:07 -0700 writes:
> It seems that confint.default returns an empty data.frame
> for objects of class mlm. For example:
> It seems that confint.default returns an empty data.frame for objects of
> class mlm.
Not quite: Note that 'mlm' objects are also 'lm' objects, and so
it is
2001 Sep 13
2
trouble locating confint function/ nls library/
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2003 Feb 07
0
confint.lm in MASS
I don't know if this has already come up in the list or elsewhere - a
quick search did't show anything relevant - but I think it's worth of
mention. The confint.lm function in package MASS doesn't work
correctly when called on a subset of parameters. The bug, easy to fix,
is that confidence intervals are computed for all parameters anyway,
and then assigned to a matrix which is too
2003 Nov 17
1
confint: which method attached?
the function
confint
uses the profiling method of the function of the package MASS
confint.glm
even after the package has been detached!
1: might this be the intenden behavior?
2. How does the function remember its 'MASS' functionality after detaching the package?
R: 1.8.0; Windows 2000
Here is a sample program
> set.seed(7882)
> x<-rep(c(0,1),c(20,20))
>
2007 Jan 05
1
Calling "confint.glm" from within another function
On July 12, 2004 Spencer Graves wrote an email describing essentially
the same issue that I would like help on: calling the confint function
from within another homemade function. Because he provided many good
examples of the problem, I will not reproduce them here but will instead
refer readers to the original posting:
http://www.mail-archive.com/r-help at stat.math.ethz.ch/msg23826.html
It is
2008 Sep 16
1
One helps with the command "confint"
Dear colleagues,
I have used statistical software "R" in academic research, and I find very
interesting. So now I have started my studies at advanced level. I have
conducted several statistical models of the type "*nls*". In respect of
procedures for models of the type nls, I'd like you answer only one question
that I have had doubts, related to the formula
2008 Oct 30
1
continue a loop after an error with confint
Hi all,
I've got a list (Reg3Lst) with 1000 nls regression results in it.
I'd like to get the confidence interval of the parameters obtained with the
nonlinear regressions. Thus I've used this:
for (i in 1:1000)
{
foo<-list(foo,confint(Reg3Lst[[i]]))
}
For some regressions the confidence interval is not estimated because of a
singular gradient result. Then it
2011 Aug 02
1
How to 'mute' a function (like confint())
Dear R-helpers,
I am using confint() within a function, and I want to turn off the message
it prints:
x <- rnorm(100)
y <- x^1.1+rnorm(100)
nlsfit <- nls(y ~ g0*x^g1, start=list(g0=1,g1=1))
> confint(nlsfit)
Waiting for profiling to be done...
2.5% 97.5%
g0 0.4484198 1.143761
g1 1.0380479 2.370057
I cannot find any way to turn off 'Waiting for. .."
I tried
2011 Aug 03
0
confint() in stats4 package
Hi there,
I had a problem when I hoped to get confidence intervals for the
parameters I got using mle() of stats4 package. This problem would not
appear if ``fixed'' option was not used. The following mini-example will
demo the problem:
x <- c(100, 56, 32, 18, 10, 1)
r <- c(18, 17, 10, 6, 4, 3)
n <- c(18, 22, 17, 21, 23, 20)
loglik.1 <- function(alpha, beta, c) {
x
2023 Dec 07
0
option to silence/quieten stats::confint.glm ?
confint.glm prints a message "Waiting for profiling to be done..."
I could have sworn that there used to be an option (quiet = TRUE?)
to turn this message off without resorting to suppressMessages()
(finer/more specific control is always preferable ...) -- but on the
basis of looking back at archived versions of MASS, and at this Stack
Overflow post:
2012 Mar 09
2
How do I force confint() for glm() to be quiet?
I need confint() for glm() to supress the messages
"Waiting for profiling to be done..."
because they mess up the caching mechanism of pgfSweave (see
https://github.com/cameronbracken/pgfSweave/issues/40).
I have read the help page of confint(), but I do not know how to get
the help page for the glm() version, if any such help page exists.
Is there a general way of turning of output
2006 May 03
1
Problem in using confint method on polr model object
I fit a proportional odds model
with the polr-function of the MASS package from
Venables and Ripley
Applying the confint method to calculate confidence intervals for the
parameters I get
the following error message
Waiting for profiling to be done...
Re-fitting to get Hessian
Error in X[, -i, drop = FALSE] : incorrect number of dimensions
Can someone explain the error-message?
(The
2008 Dec 19
0
"parm" argument in confint.multinom () nnet package
Dear R users,
The nnet package includes the multinom method for the confint function.
The R Help file (?confint) for the generic function in the stats package
and the help files for the glm and nls methods in the MASS package
indicate that one can use the "parm" argument as "a specification of
which parameters are to be given confidence intervals, either a vector
of numbers or
2007 Dec 05
1
confint for coefficients from lm model (PR#10496)
Full_Name: Christian Lajaunie
Version: 2.5.1
OS: Fedora fc6
Submission from: (NULL) (193.251.63.39)
confint() does not use the appropriate variance term when the design
matrix contains a zero column (which of course should not happen).
Example:
A 10x2 matrix with trivial column 1:
> junk <- data.frame(x=rep(0,10), u=factor(sample(c("Y", "N"), 10, replace=T)))
The
2004 Jul 13
2
confint.glm in a function
I can't get confint.glm to work from within a function. Consider
the following (using R 1.9.1, Windows 2000):
# FIRST: SOMETHING THAT WORKS FROM A COMMAND PROMPT
DF <- data.frame(y=.1, N=100)
(fit <- glm(y~1, family=binomial, data=DF,
weights=DF[,"N"]))
Call: glm(formula = y ~ 1, family = binomial, data = DF, weights =
DF[, "N"])
Coefficients: