similar to: NLS-Support

Displaying 20 results from an estimated 400000 matches similar to: "NLS-Support"

2000 Aug 16
1
SMBFS: NLS support for kernel 2.4.0-test6
Hello. It's a thing which all Russia and, I think, many other countries need. Patch allow you to specify smb server and local IO charsets. Two new options added to smbmount: iocharset=<charset> and servercharset=<charset>. They'll passed to kernel and proc.c module makes NLS conversion if need. Patches in attachment. -------------- next part -------------- A non-text
2008 Feb 18
2
skip non-converging nls() in a list
Howdee, My question appears at #6 below: 1. I want to model the growth of each of a large number of individuals using a 4-parameter logistic growth curve. 2. nlme does not converge with the random structure that I want to use. 3. nlsList does not converge for some individuals. 4. I decided to go around nlsList using: t(sapply(split(data, list(data$id)), function(subd){coef(nls(mass ~
2009 Feb 12
1
Using nls or nls.lm with a simulation output
We would like to fit parameters using a simulation with stochastic processes as theoretical values. We generate a simple exemple with nls.lm to see the logic and the problem: First without stochasticity (it is a dummy example, the fited value is simple the mean of a set of 10 numbers): #Ten numbers x <- 1:10 #Generate 10 Gaussian random number with mean=3 sd=1 simy <- rnorm(length(x),
2008 Feb 26
0
NLS -- multiplicative errors and group comparison
Hello, I am attempting to fit a non-linear model (Von Bertalanffy growth model) to fish length-at-age data with the purpose of determining if any of the three parameters differ between male and female fish. I believe that I can successfully accomplish this goal assuming an additive error structure (illustrated in section 1 below). My trouble begins when I attempt this analysis using a model
2001 Dec 14
1
Logistic regression : dicrepancies between glm and nls ?
Dear list, I'm trying to learn how to use nlme to be able to fit ad analyse mixed-model logistic regressions. In order to keep things simple, I started by the simplest possible model : a one (fixed-effect ...) continuous variable. This problem is, of course, solved by glm, but I wanted to look at a "hand-made" nls fit, in order to be able to "generalize" to nlme
2000 May 08
0
smbfs nls for Linux 2.2.16pre2
Hello I have updated my version of how to get "nls" working in smbfs for the changes made in the 2.2.16pre2 Linux kernel (both nls and smbfs). It is now a bit smaller and perhaps cleaner (except for the CONFIG_SMB_NLS, that could be removed, and the nls_utf8 abuse :) Also, it now uses an ioctl to set the codepages to use (borrowed from the work by Artem V. Ryabov). This allows you to
2004 Mar 12
0
Basic questions on nls and bootstrap
Dear R community, I have currently some problems with non linear regression analysis in R. My data correspond to the degradation kinetic of a pollutant in two different soil A and B, x data are time in day and y data are pollutant concentration in soil. In a first time, I want to fit the data for the soil A by using the Ct = C0*exp(-k*Tpst) with Ct the concentration of pollutant at time t, C0
2005 Jun 21
2
nls(): Levenberg-Marquardt, Gauss-Newton, plinear - PI curve fitting
Hello, i have a problem with the function nls(). This are my data in "k": V1 V2 [1,] 0 0.367 [2,] 85 0.296 [3,] 122 0.260 [4,] 192 0.244 [5,] 275 0.175 [6,] 421 0.140 [7,] 603 0.093 [8,] 831 0.068 [9,] 1140 0.043 With the nls()-function i want to fit following formula whereas a,b, and c are variables: y~1/(a*x^2+b*x+c) With the standardalgorithm
2012 Jun 05
1
nls: how do you know if the model is significant?
Hi all, I'm struggling with nls. How do you know if your model is significant? For a lm, you get a p-value, but you don't get it for a nls. Is there a way to calculate it? For a lm I use this: a<-summary(lm(model ~obs)) f.stat<-a$fstatistic p.value<-1-pf(f.stat["value"],f.stat["numdf"],f.stat["dendf"]) Is there something similar for a nls?
2012 Aug 14
0
error using boxcox.nls during non linear estimation
Hi all I?ve got a problem using boxcox.nls function in nlrwr packagge. I?m fitting several non linear models to these data: > x [1] 2 1 1 5 4 6 13 11 13 101 101 101 > y [1] 1.281055090 1.563609934 0.001570796 2.291579783 0.841891853 [6] 6.553951324 14.243274230 14.519899320 15.066473610 21.728809880 [11] 18.553054450 23.722637370 I used nls function with self
2008 Jan 04
3
nls (with SSlogis model and upper limit) never returns (PR#10544)
Full_Name: Hendrik Weisser Version: 2.6.1 OS: Linux Submission from: (NULL) (139.19.102.218) The following computation never finishes and locks R up: > values <- list(x=10:30, y=c(23.85, 28.805, 28.195, 26.23, 25.005, 20.475, 17.33, 14.97, 11.765, 8.857, 5.3725, 5.16, 4.2105, 2.929, 2.174, 1.25, 1.0255, 0.612, 0.556, 0.4025, 0.173)) > y.max <- max(values$y) > model <- nls(y ~
2003 Jul 27
2
WINS-Support
Hi, does Samba use localhost as WINS-Server, if only wins support = yes is set? Regards, Marc Hansen
2005 May 09
1
Unable to load NLS charset utf-8
Hi, my log is full with etries like this: Unable to load NLS charset utf-8 utf8 support is build into the kernel and selected as default nls page. testparm /etc/samba/smb.conf -v|grep charset : dos charset = CP850 unix charset = UTF8 display charset = UTF8 so whats wrong? regards julius
2009 Oct 30
0
Interpreting gnls() output in comparison to nls()
Hi, I've been trying to work with the gnls() function in the "nlme" package. My decision to use gnls() was so that I could fit varPower and such to some of the data. However, in working with a small dataset, I've found that the results given by gnls() don't seem to make any sense and they differ substantially from those produced by nls(). I suspect that I am just
2000 Jul 24
1
NLS for smbmount
I'm using Urban Widmark's smbfs/Linux kernel patch (2.2.14) to display iso-8859-1 characters in file names on NT mounts. The patch works fine for me; I'm only wondering if and when it will be integrated into the Linux kernel. After all, NLS is an essential feature and not just nice-to-have for all non-anglophone users... Yes, I know this is a bit off-topic on this list, but there
2004 May 21
1
Buglet/omission in nls package (PR#6901)
Dear all, I noticed the following under R 1.8.1 (when nls was still a separate package) but the same problem occurs under R 1.9.0 (where most (all?) of nls is now in the stats package): > data(Puromycin) > fm <- nls(rate~SSmicmen(conc,b0,b1), Puromycin, subset = state=="treated") > coef(summary(fm)) NULL The problem seems to be that summary.nls uses the name
2011 Feb 03
1
boostrap an nls regression
Hello there I have the following model based on the hollings disc equation for the type II functional response for 2 data sets: nls(eaten~(a*suppl)/(1+a*h*suppl) where eaten is the number of prey eaten by a predator and suppl is the number of prey initially supplied to the same predator. I have parameter estimates of 'a' and 'h' for the two populations studied and would like
2017 Oct 20
0
nls() and loop
?tryCatch -- Sent from my phone. Please excuse my brevity. On October 20, 2017 7:37:12 AM PDT, Evangelina Viotto <evangelinaviotto at gmail.com> wrote: >Hello I?m need fitt growth curve with data length-age. I want to >evaluate >which is the function that best predicts my data, to do so I compare >the >Akaikes of different models. I'm now need to evaluate if changing the
2003 Jun 09
1
questions about nls
Dear R users, I am new in R and I want to use the nls package to analyze some experimental data. The data is in the attached file "data". It is the response "Sav" measured at different "C0". Basically, the "C0" is a function of C1, K2, and r, and the "Sav" is a function of C0, C1, K2, and r. The math equations are shown in the attached
2010 Aug 21
1
Help Choosing Start Values for nls
Hi all, I'm trying to do a simple curve fit and coming up with some interesting results I would like to get comment on. So as shown below, tsR is my explanatory and response is... well... my response. This same data in gnumeric gets fitted with the curve "response=10078.4 + 1358.67 * ln (explanatory - 2009.07) So I'm using nls with the start values supplied by gnumeric. in