similar to: Suggestion for an extension of the API

Displaying 20 results from an estimated 1000 matches similar to: "Suggestion for an extension of the API"

2000 Oct 23
3
behaviour of plot(...,type="l")
plot(rnorm(100000),type="l") plots only about 7e4 lines while the same without type="l" works fine. Is this a feature or a bug or is this configurable? R : Copyright 2000, The R Development Core Team Version 1.1.1 (August 15, 2000) SunOS 5.5.1 Generic_103640-29 sun4u sparc SUNW,Ultra-1 Thanks Adrian -- Adrian Trapletti, Olsen & Associates Ltd., See- feldstrasse
2007 Oct 23
0
API for optimization with Simulated annealing
Dear list, I was trying to use the R API for optimization method "Simulated annealing" void samin(int n, double *x, double *Fmin, optimfn fn, int maxit, int tmax, double temp, int trace, void *ex); but I encountered the following problem: The implementation of the function samin (as seen in src/main/optim.c) passes its void * argument "ex" into the function
2001 Feb 15
1
cointegrating regression
Hi all, Can I run a cointegrating regression, for example delta Xt=a1(Yt-1-cXt-1)+E1t and delta Yt=-b1(Yt-1-cXt-1)+E2t with R were Xt and Yt are non stationary time series at t a,b,c are parameters and E1t and E2t are error terms at t. Yt-Xt is stationary Any suggestions are welcome. Best regards, /fb -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing
2001 Oct 11
2
Where's MVA?
Hi All: Package TSERIES is stated to depend on MVA. However, there is no MVA package to be found under the list of package sources. Best wishes, ANDREW tseries: Package for time series analysis Package for time series analysis with emphasis on non-linear and non-stationary modelling Version: 0.7-6 Depends: ts, mva, quadprog Date: 2001-08-27 Author: Compiled by Adrian
2003 Oct 31
1
Optimization of objective function with generic number of arguments (R-Extension with C code)
Hi All! I'm a new subscriber to this mailing list. I'm writing an R extension with C linked code having a minimization function letting me pass it an objective function with a GENERIC number of arguments and letting me to optimize over a specific one among them if there are many. ################################################# ############### IPOTETICAL MAIN ###############
2000 Dec 08
0
Re: R-help Digest V2 #283
R-help Digest wrote: > ------------------------------ > > Date: Thu, 07 Dec 2000 18:28:09 +0100 > From: Uwe Ligges <ligges at statistik.uni-dortmund.de> > Subject: Re: [R] Heteroskedasticity in R > > Vincent Leycuras wrote: > > > > Hi all, > > > > I just discovered R a couple of days ago and I must say it rocks. I've been > > looking
2000 Dec 22
0
updated tseries
Dear colleagues, the tseries package is updated and should now work with R-1.2.0. best and merry Xmas Adrian -- Adrian Trapletti, Olsen & Associates Ltd., See- feldstrasse 233, CH-8008 Zürich, Switzerland Phone: +41 (1) 386 48 48 Fax: +41 (1) 422 22 82 E-mail: adrian@olsen.ch WWW: http://www.olsen.ch
2000 Oct 20
0
Re: R-help Digest V2 #236
R-help Digest wrote: > Date: Thu, 12 Oct 2000 20:48:59 -0700 (PDT) > From: Elliot Williams <ewilliams at ucsd.edu> > Subject: [R] GARCH in package tseries > > I was running some likelihood ratio tests (using the current version of > tseries) and found a different value for the log-likelihood from what I > was getting using other software. I've traced the problem to
2000 Nov 29
0
Re: R-help Digest V2 #275
R-help Digest wrote: > > Date: Tue, 28 Nov 2000 08:20:43 +0100 > From: "Muhammad Rashid Ahmed" <rahmed at julian.uwo.ca> > Subject: [R] Fitting of Garch Model in R [forwarded] > > This accidentally (;-) didn't go to the R-help mailing list .. > > - ---- > -- start of forwarded message ------- > > To: <maechler at stat.math.ethz.ch> >
2006 Apr 13
1
bus error on calling nmmin
Hi, I'm trying to get a toy program making use of nmmin to run successfully. I've gotten to the point of compiling. However, when I attempt to run my executable, I guess a bus error. I see that someone else has asked about using nmmin before <http://tolstoy.newcastle.edu.au/R/help/06/03/23944.html>, but I haven't come across any replies. Is there some documentation on how to
2003 Jan 02
2
--copy-unsafe-links, links preserved in source tree or local directory?
Hi, I'm a bit confused about what the '--copy-unsafe-links' option considers the 'source tree'. In the man page it says that for links pointing outside the 'source tree' the file will be copied, but when I try this, for all links pointing outside of the local directory the files are copied even though the links point to files that are in the directory tree that is
2007 Nov 10
1
polr() error message wrt optim() and vmmin
Hi, I'm getting an error message using polr(): Error in optim(start, fmin, gmin, method = "BFGS", hessian = Hess, ...) : initial value in 'vmmin' is not finite The outcome variable is ordinal and factored, and the independant variable is continuous. I've checked the source code for both polr() and optim() and can't find any variable called
2006 Jul 05
1
i suspect that there a memory leak in "vmmin"?
Dear listers, Am currently using MCMC approaches to estimate some parameters of my model. One parameter has to be updated using a tuned gamma distribution. So at each iteration I estimate the mean and variance of the density of the gamma approximation using "vmmin" (i also supply the gradient argument). For moderate replications the procedure works, but if I increase them R crashes.
2009 Jan 28
3
initial value in 'vmmin' is not finite
Dear r helpers I run the following code for nested logit and got a message that Error in optim(c(0, 0, 0, 0, 0.1, -2, -0.2), fr, hessian = TRUE, method = "BFGS") : initial value in 'vmmin' is not finite What does this mean? and how can I correct it? Thank you June > yogurt = read.table("yogurtnp.csv", header=F,sep=",")> attach(yogurt)>
2009 Jul 10
2
error: optim(rho, n2ll.rho, method = method, control = control, beta = parm$beta, : initial value in 'vmmin' is not finite
I am trying to use the lnam autocorrelation model from the SNA package. I have it running for smaller adjacency matrices (<1,500) it works just fine but when my matrices are bigger 4000+. I get the error: > lnam1_01.adj<- lnam(data01$adopt,x01,ec2001.csr) Error in optim(rho, n2ll.rho, method = method, control = control, beta = parm$beta, : initial value in 'vmmin' is not
2004 Jan 14
3
How can I test if time series residuals' are uncorrelated ?
Ok I made Jarque-Bera test to the residuals (merv.reg$residual) library(tseries) jarque.bera.test(merv.reg$residual) X-squared = 1772.369, df = 2, p-value = < 2.2e-16 And I reject the null hypotesis (H0: merv.reg$residual are normally distributed) So I know that: 1 - merv.reg$residual aren't independently distributed (Box-Ljung test) 2 - merv.reg$residual aren't indentically
2004 Dec 30
1
optim/vmmin and R_alloc
I am calling 'vmmin' several times from a C function (which is called via .C). It works very well, except for memory consumption. The cause is that vmmin allocates memory via R_alloc, and this memory is not freed as vmmin exits. Instead all the allocated memory is freed on return of the .C call. In one application, I have 2000 functions of 500 variables each to minimize. In each call to
2004 Sep 28
2
[Fwd: Re: tseries Package for R]
-------- Original Message -------- Subject: [R] Re: tseries Package for R Date: Mon, 27 Sep 2004 23:56:34 -0800 From: Martin Renner <martin.renner at stonebow.otago.ac.nz> To: Adrian Trapletti <a.trapletti at bluewin.ch> References: <61CBB4C9-10C7-11D9-A624-000D932E990C at comcast.net> <4158F5B6.3020103 at bluewin.ch> see http://cran.stat.ucla.edu/bin/macosx/ and
2009 Jan 29
1
Optim error: initial value in 'vmmin' is not finite
Error in optim(method = "BFGS", c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, : initial value in 'vmmin' is not finite I am running a logit model with latent class segments. I successfully got estimates for 2 segments. However when I tried to increase the no. of segments, I got this error message at the end. I checked my code again but can't find anything wrong. Is this error
2013 Jan 22
2
Assistant
Good-day Sir, I am R.Language users but am try to? estimate parameter of beta distribution particular dataset but give this error, which is not clear to me: (Initial value in "vmmin" is not finite) beta.fit <- fitdistr(data,densfun=dbeta,shape1=value , shape2=value) kindly assist. expecting your reply: