similar to: lme, best model without convergence

Hello, I'm working on a problem using nested for-loops and I don't know if it's a problem with the order of the loops or something within the loop so any help with the problem would be appreciated. To briefly set up the problem. I have 259 trees (from 11 different species, of unequal count for each species) of which I am trying to predict biomass. For each tree species I have 10000

When I run gnls I get the error: Error in nls(y ~ cbind(1, 1/(1 + exp((xmid - x)/exp(lscal)))), data = xy, : step factor 0.000488281 reduced below 'minFactor' of 0.000976563 My first thought was to decrease minFactor but gnlsControl does not contain minFactor nor nlsMinFactor (see below). It does however contain nlsMaxIter and nlsTol which I assume are the analogs of

Dear R users; I was trying to fit a nonlinear model using gnls (nlme version 3.1-80, R 2.5.0, WinXP) and I got the following error and warning message: Error in gnls(ht ~ a1 * hd * (1 - a2 * exp(-a3 * (dbh/dq2))), data = hdat, : Step halving factor reduced below minimum in NLS step In addition: Warning message: $ operator is deprecated for atomic vectors, returning NULL in:

Thank you sir for your prompt reply. Currently i am stuck at point where I need to call an available Matlab program from an R 2.4.0 interface. How can I do this? I have downloaded the R.matlab file and also the manual in pdf. But still i am not able to get through the problem. I will be grateful to you if you can elaborate me on this. Awaiting your reply, regards, Bhanu Kalyan K

Hi, David Greene wrote: > After the successful launch of the Jaguar machine (the fastest for > open science, http://www.cray.com/Products/XT/Product/ORNLJaguar.aspx) > we're working toward the next leap in computational power. > Slight off-topic, but when I try to open the above link in Firefox 3 I get a big fat "Reported Attack Site! This web site at www.cray.com has been

I got those warnings today (and stopped browsing) but not the first time David sent the message so I suspect the site got infected very recently. --Vikram Associate Professor, Computer Science University of Illinois at Urbana-Champaign http://llvm.org/~vadve On Jul 9, 2009, at 3:19 PM, Paul Melis wrote: > Hi, > > David Greene wrote: >> After the successful launch of the

Mmmh, seems as if I really should change my options as I seem to keep sending off empty bug-reports ;-/ Sorry guys. Here is the content that should have been in the last e-mail: `R CMD check nlme' fails on my machine. The final output in nlme-Ex.Rout is: > library(nlme) > data(Soybean) > fm1 <- nlme(weight ~ SSlogis(Time, Asym, xmid, scal), data = Soybean, + fixed =

Hi. I was wondering if anyone might have some suggestions about how I can overcome a problem of "iteration limit reached without convergence" when fitting a mixed effects model. In this study: Outcome is a measure of heart action Age is continuous (in weeks) Gender is Male or Female (0 or 1) Genotype is Wild type or knockout (0 or 1) Animal is the Animal ID as a factor

Hey compiler peeps, Cray is ramping up a number of exciting projects and we're looking for new hires. Obviously parallelism has been our core focus, but the challenges of manycore and accelerator technology are presenting new twists requiring us to bring new solutions to bear. After the successful launch of the Jaguar machine (the fastest for open science,

Hope one of you could help with the following question/problem: We would like to explain the spatial distribution of juvenile fish. We have 2135 records, from 75 vessels (code_tripnr) and 7 to 39 observations for each vessel, hence the random effect for code_tripnr. The offset (‘offsetter’) accounts for the haul duration and sub sampling factor. There are no extreme outliers in lat/lon. The model

** ** I posted this message quite a time ago. Some people use my patch and I ** receive queries for a recent version from time to time. This patch didn't ** make it into the mainstream distribution yet. Sorry. ** ** This is the updated version for Samba-1.9.17p1. ** Hello, people. I have implemented some enhancements for Samba: 1. dynamic configuration-values 2. configurable

> This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3294209241_521622 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I have been unable to find any discussion regarding this issue, but I have been able to reproduce it on two different machines. Both computer are Macs running

Hi All, I've been having a little trouble with creating a loop that will run a a series of t.tests for inspection, Below is the code i've tried, and some checks i've looked at. I've used the get(paste()) idea as i was told previously that the use of the eval should try and be avoided. I've run a single syntax to check that my systax is correct and works without any problems