similar to: help with syntax of nlme call.

Hello. I am trying to fit a nonlinear mixed model involving 3 parameters. I have successfully made a self-starting function. getInitial() correctly outputs the initial estimates. I can also use the nlsList with this function to get the separate nonlinear fits by group. However, I get an error message when using the nlme function. Here is the relevent code:

Hello. I have a script in which I repeatedly fit a nonlinear regression to a series of data sets using nls and the port algorithm from within a loop. The general structure of the loop is: for(i in 1:n){ … extract relevant vectors of dependent and independent variables … … estimate starting values for Amax and Q.LCP…

hi, i am having trouble getting a particular time series to plot. this is what i have: > class(irradiance) [1] "ts" > irradiance[1:30] 197811 197812 197901 197902 197903 197904 197905 197906 1366.679 1366.729 1367.476 1367.739 1368.339 1367.883 1367.916 1367.055 197907 197908 197909 197910 197911 197912 198001 198002 1367.484 1366.887 1366.935

Dear R users, I want to do a fitted.contour plot of selected columns of a dataframe M with M$AM and M$Irradiance as x and y axes respectively. The level of the contour shall be determined by M$PR. Some words on my data first. Dataframe M looks like: head(M$Irradiance) [1] 293 350 412 419 477 509 head(M$AM) [1] 2.407 2.161 1.964 1.805 1.673 1.563 head(M$PR) [1] 70.102 72.600 75.097 80.167

Blame guus. -- Rob 'robster' Bradford Chief Editor/Lead developer DebianPlanet.org -------------- next part -------------- Sep 1 10:24:02 zeus syslogd 1.4.1#2: restart. Sep 1 10:24:17 zeus pppd[326]: rcvd [LCP EchoRep id=0x92 magic=0x9936a81f] Sep 1 10:24:47 zeus pppd[326]: sent [LCP EchoReq id=0x93 magic=0x48b43815] Sep 1 10:24:47 zeus pppd[326]: rcvd [LCP EchoRep id=0x93

I am having difficulty understanding the syntax of the nlme() function for nonlinear mixed models. The data frame is called Marouane.chlorophyll. The model involves a dependent variable (Absorb) and an independent variable (Ch.surf), which are both numeric variables in the data frame. The data are hierarchically grouped as Espece, Plante nested within Espece, and Feuille nested within Plante

I'm having a trouble. I use winXP to connect through L2TP/IPsec to one Linux server. When I try to connect in my domain appear an error at log. Plugin winbind.so loaded. WINBIND plugin initialized. using channel 36 Using interface ppp1 Connect: ppp1 <--> /dev/pts/3 sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <auth chap MD5> <magic 0x564e3dc9>

I would like to wrap a y-axis label onto two lines. My label is an expression containing both text and math symbols. I have looked at plotmath, strsplit(), strwrap(), deparse(), do.call(), substitute() and bquote(). Based on previous posts, I can get plain text to wrap. However, when I try these methods on my label, the exact string is returned, rather than evaluating the math symbols. My

Hi: I am using the following command: xyplot(dat6$CO3*1e6 ~ dat6$irradiance, data=dat6, group=ref, xlab=list(label=expression(paste("Irradiance (", mu, "mol photons", m^"-2", " ", s^"-1", ")")), cex=1.3), ylab=list(label=expression(paste("Carbonate concentration (x ", 10^"6", " ", kg^"-1",

I'm wondering if I'm seeing a regression of 5616 with 3.4.8. I'm trying to set-up pptpd with winbind, which I'm doing on two machines on Debian lenny, and I'm trying on Debian Squeeze now. The Windows client is saying "Error 778: It was not possible to verify the identity of the server." The logs say that everything is ok, and that the client is hanging up the

Hi all, I read the setup at http://www.blackh0le.net/articles/vpn-dun-howto.html to setup my VPN. However, I'm having a problem which I think is proxy-ARP not working. I like to ask you to see if you know what's going on. When I ping 10.77.1.1 from windows XP machine the packets get to the 10.77.1.1 machine, but they don't have a return path to get back. When I do ping the windows

Hello. I am trying to understand the syntax of the nonlinear least squares function (nls) when the function definition is made outside of the call. Here is the context. 1. If I specify the following command, it works fine: > fit2<-nls( + A~Am*(1-exp(-alpha*(I-LCP))),data=dat1, + start=list(Am=3.6,alpha=0.01,LCP=20)) 2. Now, I want to be able to specify the function definition

I am relatively new to NLME, so the solution to the problem I describe here may be obvious. But I've spent several days trying to get the right syntax to formulate random effects for this model appropriately. The full model is: nlme(a ~ a.mitscherlich(a.qe, a.max, lcp, light), data=light, fixed = a.max + a.qe + lcp ~ trt, random = a.max + a.qe + lcp ~ 1 | bench/line,

Following on my posting of this morning, concerning a problem that I am having constructing a self-starting function for use with nls (and eventually with nlsList and nlme), the following is the self-starting function called NRhyperbola: > NRhyperbola function (Irr,theta,Am,alpha,Rd) { # Am is the maximum gross photosynthetic rate # Rd is the dark resiration rate (positive value) #

[R-0.50-a3] It seems intuitive that attach( .., pos = 1) is harder than other attach()es. But still... If it ever will work, it is even more important to have detach( .... , save = "VAR.name") ~~~~~~~ -------- to be working. The documentation says that detach(.) returns invisibly. Therefore, we don't NEED the above 'save = ' argument to detach, since we can

hello everyone, i am setting up my computer and want to establish internet connection over ADSL. For this i have to use pptp. The annoying thing is, that doing 'pptp 10.0.0.138' i get a connection only every second time. Perhaps it is a problem, that i cannot stop pptp but killing it, and therefore pppd has to clean up? i am using pppd 2.4.3 and pptp 1.5.0 Thanks in advance

I am trying to set up a secure PPP tunnel between an OpenSSH client and server, and am having problems establishing the tunnel. ----------------------------------------------------------------------------- Server information: Stock Redhat 6.1 machine running a 2.2.12 kernel OpenSSH version 2.2.0p1 (downloaded as Redhat RPMs, revision 2) OpenSSL version 0.9.5a (downloaded as Redhat RPMs, revision

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:08.ppp Security Advisory The FreeBSD Project Topic: Buffer overflow in sppp(4) Category: core Module: sys_net Announced: 2006-08-23

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:08.ppp Security Advisory The FreeBSD Project Topic: Buffer overflow in sppp(4) Category: core Module: sys_net Announced: 2006-08-23

Hi friends, I need help. I''ve PPTP Server running behind Shorewall. The PPTP server is working OK in my LAN, but I want to connect outside and It isn''t working. I''ve configurate shorewall like http://www.shorewall.net/PPTP.htm. I add only this lines in my rules DNAT net loc:165.182.15.15 tcp 1723 - IPext DNAT net loc:165.182.15.15 47 - - IPext It isn''t