Displaying 20 results from an estimated 10000 matches similar to: "$"
2006 Mar 08
3
bug in map('world') ?
hi,
did'nt see anything in the archive:
map('world',pro='rectangular',para=0)
yields a strange artifact (horizontal bar) extending over the whole map
at a certain latitude range (approx 65 deg. north), whereas
map('world',pro='rectangular',para=180)
(which should be the same) does not show the artifact.
the artifact shows up in other projections as well,
2004 Aug 13
2
bus error /segmentation fault from 'approx' (PR#7166)
Full_Name: joerg van den hoff
Version: 1.9.0 and 1.7.1
OS: MacOS (1.9.0), SunOS (1.7.1)
Submission from: (NULL) (149.220.4.88)
something like (sure not the originally intended input, but something like this
can happen...):
approx(c(1,2),c(NA,NA),1.5)
crashes R (bus error under MacOS, segmentation fault under SunOS).
search of the bug archive did not work. I hope this bug was not reported
2006 Dec 14
3
sapply problem
I have encountered the following problem: I need to extract from
a list of lists equally named compenents who happen to be 'one row'
data frames. a trivial example would be:
a <- list(list(
df = data.frame(A = 1, B = 2, C = 3)), list(df = data.frame(A = 4,B = 5,C = 6)))
I want the extracted compenents to fill up a matrix or data frame row by row.
the obvious thing to do seems:
b
2004 Aug 16
3
bus error /segmentation fault from 'approx' (PR#7177)
Full_Name: joerg van den hoff
Version: 1.9.1
OS: MacOS and SunOS
Submission from: (NULL) (149.220.4.88)
follow up to ID 7166. something like
approx(c(1,2),c(NA,NA),1.5,rule=2)
crashes 1.9.1 on both systems (MacOS 10.3.5.: bus error, SunOS 5.9:
segmentation fault) even if xout is within given x range (as in example above)
where rule=2 seems not be relevant anyway.
2004 Jun 08
2
Is there an R-version of rayplot
I need to make plots similar to those produced by the s-plus rayplot function but can't seem to find it in R. These 'vector maps' plot a ray or vector at each specified location. Is there something similar in R ?
--Rich
Richard Kittler
AMD TDG
408-749-4099
2006 Aug 24
4
extremely slow recursion in R?
I recently coded a recursion algorithm in R and ir ran a few days
without returning any result. So I decided to try a simple case of
computing binomial coefficient using recusrive relationship
choose(n,k) = choose(n-1, k)+choose(n-1,k-1)
I implemented in R and Fortran 90 the same algorithm (code follows).
The R code finishes 31 minutes and the Fortran 90 program finishes in 6
seconds. So the
2005 Oct 10
2
problem with lapply(x, subset, ...) and variable select argument
I need to extract identically named columns from several data frames in
a list. the column name is a variable (i.e. not known in advance). the
whole thing occurs within a function body. I'd like to use lapply with a
variable 'select' argument.
example:
tt <- function (n) {
x <- list(data.frame(a=1,b=2), data.frame(a=3,b=4))
for (xx in x) print(subset(xx, select = n))
2006 Jun 29
1
inconsistent matplot behaviour?
I raised this question quite some time ago but it quitly went down the
river. I'll give it a second try (before keeping my modified version of
matplot for ever...):
matplot supports vectors (and/or character strings) for a number of
arguments namely `type', `lty', `lwd', `pch', `col', `cex'. all of them
act consistently in such a way that the first entries are used
2012 Jul 03
1
nls problem
hi list,
used versions: 2.12.1 and 2.14.0 under ubuntu and macosx.
I recently stumbled over a problem with `nls', which occurs if the model
is not specified explicitly but via an evaluation of a 'call' object.
simple example:
8<--------------------------------------------------------------------------------------
nlsProblem <- function (len = 5) {
2005 Jul 13
1
unexpected par('pin') behaviour
hi everybody,
I noticed the following: in one of my scripts 'layout' is used to
generate a (approx. square) grid of variable dimensions (depending on
no. of input files). if the no. of subplots (grid cells) becomes
moderately large (say > 9) I use a construct like
###layout grid computation and set up occurs here###
...
opar <- par(no.readonly = T);
2006 Jun 16
3
Vector Manipulation
I have a vector that has 1,974 elements and each element is one of the
following (B, F, N, Y). How do I recreate that vector accept in the
place of N put 0 and in the place of B, F or Y put a 1?
Thanks,
Jacob
[[alternative HTML version deleted]]
2006 Jun 20
2
glm beta hypothesis testing
In summary.glm I'm trying to get a better feel for the z output. The
following lines can be found in the function
1 if (p > 0) {
2 p1 <- 1:p
3 Qr <- object$qr
4 coef.p <- object$coefficients[Qr$pivot[p1]]
5 covmat.unscaled <- chol2inv(Qr$qr[p1, p1, drop = FALSE])
6 dimnames(covmat.unscaled) <- list(names(coef.p), names(coef.p))
2007 Feb 21
1
Confindence interval for Levenberg-Marquardt fit
Dear all,
I would like to use the Levenberg-Marquardt algorithm for non-linear
least-squares regression using function nls.lm. Can anybody help me to
find a a way to compute confidence intervals on the fitted
parameters as it is possible for nls (using confint.nls, which does not
work for nls.lm)?
Thank you for your help
Michael
2008 Mar 21
1
GAMs
Hi
I have been searching for goodness-of-fit tests (or lack of fit tests) for GAMs and cannot find anything.
My problem is: after fitting a GAM to mortality data (smoothing crude estimated rates of mortality - a process called graduation in the actuarial literature), (1) how to assess the fit of the model with reference to "adherence to data" for the fitted model (I do not think the
2006 Jun 22
1
GLM plotting estimated responses
I have recently fit a binomial link = logit model and I want to visually
see the estimated response across a specific covariate.
I can accomplish this by creating a function that extracts the betas
from the model then forms a linear combination with the classes I'm
interested in next pass the value through the inverse logit function, do
this for each class in a covariate, then plot the
2008 Dec 10
1
mixed exponential distribution
Good morning,
Is there anyway to do Mixed Exponential Distribution in R? I am trying
to load some lag-weighted empirical survival distribution into R and run
a mixed exponential on that data.
Thanks,
Jacob Fazekas
Jacob Fazekas
Assistant Actuary
Auto-Owners Insurance Company
517-703-2543
fazekas.jacob@aoins.com
[[alternative HTML version deleted]]
2008 Aug 08
3
Multivariate regression with constraints
Hi all,
I am running a bivariate regression with the following:
p1=c(184,155,676,67,922,22,76,24,39)
p2=c(1845,1483,2287,367,1693,488,435,1782,745)
I1=c(1530,1505,2505,204,2285,269,1271,298,2023)
I2=c(8238,6247,6150,2748,4361,5549,2657,3533,5415)
R1=I1-p1
R2=I2-p2
x1=cbind(p1,R1)
y1=cbind(p2,R2)
fit1=lm(y1~-1+x1)
summary(fit1)
Response 2:
Coefficients:
Estimate Std. Error t value
2017 Jan 17
32
[PATCH 0/6] drm/nouveau: Enable HDMI Stereoscopy
This is an initial implementation of HDMI 3D mode support for the
nouveau kernel driver. It works on all of the hardware that I have
available to test at the moment, but I am unsure as to the overall
approach taken for setting HDMI InfoFrames, there's no support for g84
or gf119 disps, and the criteria for enabling stereo support for an
output seems a bit iffy.
The first four patches arrange
2004 Jul 12
2
lme unequal random-effects variances varIdent pdMat Pinheiro Bates nlme
How does one implement a likelihood-ratio test, to test whether the
variances of the random effects differ between two groups of subjects?
Suppose your data consist of repeated measures on subjects belonging to
two groups, say boys and girls, and you are fitting a linear mixed-effects
model for the response as a function of time. The within-subject errors
(residuals) have the same variance in
2013 Jul 03
1
Recommended filesystem for GlusterFS bricks.
Hi,
Which is the recommended filesystem to be used for the bricks in glusterFS. ?? XFS/EXT3/EXT4 etc .????
Thanks & Regards,
Bobby Jacob
Senior Technical Systems Engineer | eGroup
P SAVE TREES. Please don't print this e-mail unless you really need to.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: