similar to: Defining a variable outside of optim or differential equation solver.

I am trying to to write a wrapper function for the ode solver (under the package desolve) to enable it to take multivariate arrays. I know how to do it for 1 dimension arrays but my code breaks down when I try to do it for 2 dimensional arrays. Here is my code diffwrap<-function(t,y,mu)vdpol(t=t,A[1:3,1:4]<-y[1:12],B[1:12]<-y[13:24],mu=mu) vdpol<-function(t,A,B,mu) { list(c(mu,

I am trying to use the package ode and periodically it will come up with this error message Warning..Internal T (=R1) and H (=R2) are such that in the machine, T + H = T on the next step (H = step size). Solver will continue anyway. And then the program just take very long to run. Is there anyway to get the program to terminate when this warning is issued instead of continuing to run ?

I *think* this might be better posted here: https://bioconductor.org/help/support/ Cheers, Bert On Thu, Feb 1, 2024 at 4:37?PM TJUN KIAT TEO <teotjunk at hotmail.com> wrote: > Is there a way to extract list of words in BioWordVec in R > > Thank you > > Tjun Kiat > > [[alternative HTML version deleted]] > > ______________________________________________

Is there a way to extract list of words in BioWordVec in R Thank you Tjun Kiat [[alternative HTML version deleted]]

Hello All, I'm struggling to solve this ODE using R, vdpol <- function (h, v, t) ( list(c ( -0.1*v/(pi*(2*10*h-h^2)), (v = (-0.1*v/(pi*(2*10*h-h^2))^2) + 2*9.81*h)) )) library(deSolve) yini <- (c(h = 20, v=0)) nonstiff <- ode(y = yini, func = vdpol, times= seq(0, 30, by =

I am trying to do parallel programming and I tried this library(doSNOW) library(foreach) testfunc<-function(x){ x<-x+1 x } noc<-2 cl <- makeCluster(do.call(rbind,rep(list("localhost"),noc)), type = "SOCK") registerDoSNOW(cl) clusterExport(cl=cl,c("testfunc.r")) testl<-foreach(pp=1:2) %dopar% { testfunc(pp) } And this works but if I try to

I am using the package Multicore/Parallel to do importance sampling. I have 5 cores on my computer. And I have let's say 10 000 particles to generate. What I did was to send 5 particles in each time, calling the package parallel. Which means in all I am calling the parallel command 2000 times. What happens is in the end somewhere along the way I end up with the error message error in fork

I know this has been covered before but I have read all the posts on this subject but I still cannot resolve it. I tried to install rjags on a 64bit Fedora 17 and I got this error message Error : .onLoad failed in loadNamespace() for 'rjags', details: call: dyn.load(file, DLLpath = DLLpath, ...) error: unable to load shared object '/usr/lib64/R/library/rjags/libs/rjags.so':

Hi, I installed the cfrontend 1.5 and LLVM 1.5 from source in cygwin successfully using GCC3.4.3 and binutils2.15 (as in makefiles do not complain errors except some warnings). However when I do this, there are some errors like, *************************************************************** u0201201 at 9nnvf2ay /home/cfrontend/install/lib $ llvm-ranlib libiberty.a llvm-ranlib: Error opening

Dear All, I was using rk4 and lsoda to solve a ODE system. However, both of them gave bad accurate solutions, especially compared with Matlab solver ODE45. For example, ODE45 gave solutions that can go to a stable level (about 1.6) when time goes to infinity, however, the solutions from lsoda are decreasing to very very small (about 1e-130) numbers. Does R have more accurate ODE solvers as

Hi All, I am planning to use list scheduling on LLVM instructions. Any recommendation on how to start ? As in which codes in LLVM that I need to look at. Since I am still a newbie, any readings recommended? :) Thanks a lot for the help. Regards, Kiat -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, Queries: 1 - what is the best RAID (0,1,5,10,50) for server running very, very VM instances ??? 2 - and config of stripes/element sizes (32, 64, 128, 256, etc, KB) ?? 3 - in the configuration of VM, exit one difference in performance between image file (disk:/) or LVM partition (phy:/) ??? any URL or docs for read about this theme ? mmm.. it is all for moment. thanks -- -- Victor

Hi, I am still new to LLVM and also GNU softwares. I am doing a project using LLVM. I was building cfrontend on my windows cygwin, however I encountered this problem, may I now what is the cause? ******************************** my configuration output is: bash-2.05b$ ../src/configure --prefix=$CFEINSTALL --disable-threads --disable-n ls --disable-shared --enable-languages=c,c++ loading

Dear List, I have a set of data which looks like this (small set of sample) A A 0.431 A A 0.439 A A 0.507 A G 0.508 A A 0.514 I will like to use this data to plot a dot plot, with the X-axis being of type character, and my y axis of type numeric. When I try to use the dot chart function, I get the error message "'x' must be a numeric vector or matrix", which I can understand

Hi list, I'm trying to migrate from a workgroup based Samba server to a domain based Samba server. I need the following features - Roaming profiles - LDAP based user administration / authentication I think the LDAP part is mostly doable, though I do foresee some hair tearing, but my main concern is with the roaming profiles. Users do not have a fixed workstation and log-on to whichever

Hello, I am developing an agent-based model to simulate the spread of infectious diseases in heterogeneous landscapes composed of habitat polygons (or clumps of connected cells). To simplify the model, I consider a habitat grid (or raster) containing the polygon ID of each cell. In addition, I have epidemiological parameters associated with each polygon ID. At each time step, the parameter values

To whom it may concern, I am a student at Macaleste College, and next semester Macalester is going to offer a course for CellBio that is mainly statistically based. For the most part the students will be using R for analysis. The problem is there will be some simple differential equations for the students to solve. The committee that in charge of the classes corriculam would like only to

I tried to use lsode with precompiled C code instead of an R function defining the derivatives. No problem so far. However, now I need to implement an ODE that contains spline functions, i.e. the derivatives at given time points depend on the value of a spline function at this time point. What is an efficient way to implement this in precompiled C code? -- Daniel Kaschek <daniel.kaschek at

Hi, Does somebody knows of the existence of a library of functions for solving differential equations, I need a solver for a system of non linear first order differential equations. I think there was something in IMSL but that was a long time ago and probably there are some new algorithms in the new now. Thanks for any pointers. . R. Heberto Ghezzo Ph.D. Meakins-Christie Labs McGill

Hello! I would like to know if R can solve Differential Equations... I don't think so because, in my point, I see R like a Statistical System, not a Math System. Am I wrong? Thank you very much. M??rcio de Medeiros Ribeiro Graduando em Ci??ncia da Computa????o Departamento de Tecnologia da Informa????o - TCI Universidade Federal de Alagoas - UFAL Macei?? - Alagoas - Brasil Projeto CoCADa