similar to: nlm in R version 0.90

I have an R program which basically reads in data. It then calls a C program which performs numerical integration until converging to a solution. The result is then passed back from C to R. Unfortunately, when running this program, the virtual memory associated with it explodes -> 2GIG!. Does anyone know what might be causing this or can suggest possiblie ways to debug? Thank you! Joanna

Dear R People: I am trying to duplicate the example from Dennis and Schnabel's "Numerical Methods for Unconstrained Optimization and Nonlinear Equations", which starts on page 149. My reason for doing so: to try to understand the "nlm" function. Here is the function: >mfun1 function(x) { z <- matrix(0,nrow=2,ncol=1) z[1,1] <- x[1]^2 + x[2]^2 -

Dear R list members, I have a question about the proper use of the typsize and fscale arguments to nlm. I use nlm in my sem package to fit general structural-equation models, which entails maximizing a multinormal likelihood with respect to parameters that represent regression coefficients and covariances of variables. The magnitudes of these parameters can be very different. The

Hello all- First time posting to group in 3.5 years of using Samba ;) I have a particularily odd problem that the folks over at sql-server-performance.com forums have never seen nor heard of... I am setting up an W2kAS/SQL2k active/passive cluster using Cluster Services. The MSCS requires a common domain login for installing and configuring MSCS which I have setup on my Samba 2.2.8a PDC

HI, Using c11<- 0.01 c12<- 0.01 c1<- 0.10 c2<- 0.10 One possible problem is that: dim(res5) #[1] 513? 20 res6<-aggregate(.~m1+n1+m+n,data=res5[,c(1:6,9:12,21:24)] ,max) #Error in `[.data.frame`(res5, , c(1:6, 9:12, 21:24)) : ?# undefined columns selected A.K. ________________________________ From: Joanna Zhang <zjoanna2013 at gmail.com> To: arun <smartpink111 at

Cognitive Electronics is an innovative systems startup headquartered in Boston designing a new low power massively parallel processor for use in Big Data analytics, simulation, research and other parallel compute-intensive applications. We are seeking a Principal Compiler Engineer to develop the optimizing LLVM-based compiler that will be the centerpiece of our software toolkit. If you are

Hi all, I have a large set of descriptors, which are stored as the vectors, each one containing about 450 elements. Now I have to perform some algebraical operations on this set to eliminate the redundant ones. The problem is, that not all vales in the vectors are known. Are there any norm defined how should I process such vectors? Simple example: having two vectors: a b 3 4 2

Hi, Is there a way to populate customized settings of the drivers (printing related TDB files) from one Print Server to another? Here is the background: I am working on centralized driver distribution. Besides pushing all the drivers from a central location to the edges, the administrator should also be allowed to customize the drivers settings and the distribution should send those

I can't seem to get the demo(nlm) to run under R version 0.99.0 Anyone know a solution? > fgh <- function(x) { gr <- function(x1, x2) { c(-400 * x1 * (x2 - x1 * x1) - 2 * (1 - x1), 200 * (x2 - x1 * x1)) } h <- function(x1, x2) { a11 <- 2 - 400 * (x2 - x1 * x1) + 800 * x1 * x1 a21 <- -400 * .... [TRUNCATED] > nlm(fgh,

I wonder if there is any resolution to this problem. I'm encountering similar situation with the Nashuatec DSC338 and P7325 printers from Ricoh using RPCS drivers. After uploading those drivers and performing basic printing preferences configuration, the print server crashed and become inaccessible. Here is the error from samba.log: [2005/07/23 12:14:19, 0]

Dear R users, I have been using rsympy to solve a set of simultaneous equations from R. There are two solutions for the variable I'm interested in, xx[0] and xx[1], which are in terms of symbols called lam and conc. I'd like to pick out the one which is positive at (lam=0, conc=0) and call it mysol. In python I could write: if (xx[0].subs(lam,0)).subs(conc,0)>0: mysol=xx[0]

I am getting an error when trying to import tab delimited .txt file saved from Excel. I have read what is posted on the forums but still am confused. I saved my Excel file (DataTestforR.xlsx) as a tab delimited txt file (DataTestR.txt) on my Desktop. In the RGUI, I tried to import the txt file and got an error > myfile<-"C:\\Users\\jpapa\\Desktop\\DataTestR.txt" >

HI, While I was working on R , I had a pop up from mcafee asking me if I wasih to block or allow something to connect. I did not see r in the question, so I had clicked on the option " block". since then, when I start R through excel , I only get R console and I do nto get R script anymore. Please advise Thanks

I installed R on my Windows laptop in C:\Program Files\R\R-2.15.2 and am able to open RGUI (640bit), see packages and run commands. However, when I test the installation and run the basic tests and all the tests on the standard and recommended packages i.e.: library("tools") testInstalledBasic("both") testInstalledPackages("base", errorsAreFatal

Hi, final<-data.frame() ?? for (m1 in 4:10) { ?????? for (n1 in 4:10){? ?????????? for (x1 in 0: m1) { ????????????? for (y1 in 0: n1) { final<- rbind(final,c(m1,n1,x1,y1)) res}}}} ?final1<-within(final,{flag<-ifelse(x1/m1>y1/n1, 1,0)}) ?head(final1) #? m1 n1 x1 y1 flag #1? 4? 4? 0? 0??? 0 #2? 4? 4? 0? 1??? 0 #3? 4? 4? 0? 2??? 0 #4? 4? 4? 0? 3??? 0 #5? 4? 4? 0? 4??? 0 #6? 4? 4?

Hello, Does anyone know if the cor function, when method = "spearman", returns a correlation coefficient corrected for any ties in the ranks of the data? I have data with quite a few ties and am thinking that I should use a calculation of the coefficient corrected for ties, but before I try and code this calculation myself, I thought I should check whether or not cor() automatically

I am having difficulty getting the dynamic tree cut package to work. Given the data table "myddtable" LengthPlaceColorAge5HRed224ABlue205WGreen243GRed222GBlue236WGreen255ARed194H Blue23 I created a similarity matrix using DAISY and Gower metric and specified Place and Color columns as characters (since they are categorical variables) > dd.daisy<-daisy(myddtable, metric =

I am trying to create contingency tables (to evaluate prior to performing Pearson's Chi-Squared test for independence). I would like to see column and row totals as well as expected and observed values and cell counts. I tried to use the package "contingency. tables" but get the following warning: package ‘contingency.tables’ is not available (for R versions 2.15.2) Is there

----- Mensagem encaminhada ---- De: Ricardo A. Reis <ricardo_bsd@yahoo.com.br> Para: security@freebsd.org Enviadas: Sexta-feira, 3 de Novembro de 2006 10:54:14 Assunto: FreeBSD and the new virtual machine-based rootkits Hi All, Recently i participated in Brazil on October 2006 The FIRST/TRANSITS and II Latin American Incident Response Conference (COLARIS). In the II COLARIS - Joanna

Hi R-help! I'm trying to understand how R's nlm function updates its estimate of the Hessian matrix. The Dennis/Schnabel book cited in the references presents a number of different ways to do this, and seems to conclude that the positive-definite secant method (BFGS) works best in practice (p201). However, when I run my code through the optim function with the method as "BFGS",