similar to: problems with nls?

Displaying 20 results from an estimated 1000 matches similar to: "problems with nls?"

2009 Mar 06
0
Variance inflation factors (VIF)
I have the following script, how can I implement to achieve that calculate the VIF. Thanks. U1.7km<-c(15:24) R<-c(1.2,0.2,3.6,2.5,4.8,6.3,2.3,4.1,7.2,6.1) Hm<-c(1:10) mod<-nls(R~a*(U1.7km^b)*(Hm^c), start=list(a=2.031, b=0.800, c=-0.255), trace=T) summary(mod) coef(mod) coef(summary(mod)) -- View this message in context:
2003 Nov 03
2
problem building MS-Windows package under linux
hi there, trying to follow the steps of Yan & Rossini 2003, I have two problems : first when I 'make CrossCompileBuild', I get : ****************************************************************************** make[1]: Entering directory `/home/ros/RWORK/CROSSSOMP/WinR/R-1.8.0/src/gnuwin32' make -f Makefile.docfiles make[2]: Entering directory
2006 Dec 11
1
{noob warning!] Irish Revenue software
Hello all, I'm quite a newbie to wine, and have some basic things running under it like WT Library, & Seamonkey. I need to install the local Revenue software because they sent me all tax documentation by email now :-(. My PC: Athlon 2.6Ghz with 1 gig, 40G hd, running Fedora Core 5 ROS ((Irish) Revenue Online Service) System Requirements
2013 Mar 21
2
NADA
Dear Users Regarding the NADA package, would anyone be able to help me understand what values are actually plotted on the Y axis of the plot obtained by using the *ros* function on the data and plotting the result with the plot() function? The Y axis is labeled "Values". According to the NADA user manual, ros performs a log transformation of the data by default, but the user can specify
2009 Mar 15
1
BOOTSTRAP_CROSS VALIDATION
I need a script that works for Bootstrap validation. Could someone explain me when should I use the Bootstrap technical or Jackknife? Thanks -- View this message in context: http://www.nabble.com/BOOTSTRAP_CROSS-VALIDATION-tp22529500p22529500.html Sent from the R help mailing list archive at Nabble.com.
2018 Feb 23
2
R: Missing 'security' tab
Check this first. https://www.itechtics.com/3-ways-showhide-security-tab-windows-10/ Greetz, Louis > -----Oorspronkelijk bericht----- > Van: samba [mailto:samba-bounces at lists.samba.org] Namens > Rowland Penny via samba > Verzonden: vrijdag 23 februari 2018 11:03 > Aan: samba at lists.samba.org > Onderwerp: Re: [Samba] R: Missing 'security' tab > > On
2012 Oct 29
1
Hausman test error solve
Hello, I am trying to conduct a Hausman test to choose between FE estimators and RE estimators. When I try to run: library(plm) fixed <- plm(ROS ~ DiffClosenessC +ZZiele + AggSK + nRedundantStrecken + Degree + KantenGew + BetweennessC + SitzKappazitaet, data=Panel,index=c("id","time"),model="within") summary(fixed) fixef(fixed) random <-plm(ROS ~
2006 Mar 20
1
type in daisy
Hi, I'm a PhD student and I want to use the function 'daisy' from the package 'cluster' to compute dissimilarities. My variables are of mixed types so I use the argument 'stand' in daisy to define the type of my variables. I have the following error message : Warning message: binary variable(s) 13, 16, 17, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
2018 Feb 23
2
R: Missing 'security' tab
ah... ok, now i understand.   So you have a small difference between these to servers. My first guess would be something with vfs_objects.  Wrong orders might hide the security tab in windows.   Your setting up windows ACL's. Remove all posix related setttings from smb.conf ( im asking Rowland for support here, because om on holiday in 20 min  )  :-P :-)) ...   All you need for a windows
2010 Jan 28
2
Data.frame manipulation
Hi All, I'm conducting a meta-analysis and have taken a data.frame with multiple rows per study (for each effect size) and performed a weighted average of effect size for each study. This results in a reduced # of rows. I am particularly interested in simply reducing the additional variables in the data.frame to the first row of the corresponding id variable. For example:
2005 Nov 14
1
Yeah !!!
Wow !! Seems like RedCloth is now able to output DocBook !!!! Great I have to Say !!! -- Frederick Ros aka Sleeper -- sleeper at jabber.fr Make sure special cases are truly special. - The Elements of Programming Style (Kernighan & Plaugher) -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189
2010 Feb 20
3
aggregating using 'with' function
Hi All, I am interested in aggregating a data frame based on 2 categories--mean effect size (r) for each 'id's' 'mod1'. The 'with' function works well when aggregating on one category (e.g., based on 'id' below) but doesnt work if I try 2 categories. How can this be accomplished? # sample data id<-c(1,1,1,rep(4:12)) n<-c(10,20,13,22,28,12,12,36,19,12,
2000 Feb 14
2
par(fig) problem
hello R-users, I'd like to plot four graphics on the same page but with different sizes. I've tried to use : par(fig=c(0,0.5,0,0.6)) plot(fig1) par(fig=c(0.5,1,0,0.6)) plot(fig2) etc... but when a figure is plotted, it erase the previous. I've tried to pass 'new=T' to plot function but it's not possible. What can I do ? is it a bug ? I've already reported this a 2 or
2006 Mar 14
1
Ordered logistic regression in R vs in SAS
I tried the following ordered logistic regression in R: mod1 <- polr(altitude~sp + wind_dir + wind_speed + hr, data=altioot) But when I asked The summary of my regression I got the folloing error message: > summary (mod1) Re-fitting to get Hessian Error in optim(start, fmin, gmin, method = "BFGS", hessian = Hess, ...) : the initial value of 'vmin' is not
2012 Jun 29
1
number of items to replace is not a multiple of replacement length
Hello, I'm a complete newbie to R so sorry if this is too basic..:-S I have to modify some scripts someone else did to make it work with my data. For some reason, one of the scripts which were supposed to work is not, and I get the error message "number of items to replace is not a multiple of replacement length". The script is this one: *open_lpj_nc_gpp <-
2009 Jun 17
2
djustment values not defined
Hello,   I am using mod1 <- lrm(y~x1+x2,na.action=na.pass,method="lrm.fit") summary(mod1) and I've got the following error: Error in summary.Design(mod1) : adjustment values not defined here or with datadist for x1 x2   Many thank, Amor [[alternative HTML version deleted]]
2000 Mar 15
1
evaluation is nested too deeply: infinite recursion?
hello R-users, I'm trying to port from S+4 a library called S2HTML. generic function HTMLExport, when called for a lm object, uses HTMLExport.lm which itself calls HTMLExport.list to export the summary. My problem is that HTMLExport.list may itself call HTMLExport (and so HTMLExport.list) for components of the lists that are lists themselves (like "terms" component of an lm object).
2010 Feb 15
2
creating functions question
Hi All, I am interested in creating a function that will take x number of lm objects and automate the comparison of each model (using anova). Here is a simple example (the actual function will involve more than what Im presenting but is irrelevant for the example): # sample data: id<-rep(1:20) n<-c(10,20,13,22,28,12,12,36,19,12,36,75,33,121,37,14,40,16,14,20)
2006 Oct 04
1
extracting nested variances from lme4 model
I have a model: mod1<-lmer( x ~ (1|rtr)+ trth/(1|cs) , data=dtf) # Here, cs and rtr are crossed random effects. cs 1-5 are of type TRUE, cs 6-10 are of type FALSE, so cs is nested in trth, which is fixed. So for cs I should get a fit for 1-5 and 6-10. This appears to be the case from the random effects: > mean( ranef(mod1)$cs[[1]][1:5] ) [1] -2.498002e-16 > var(
2001 May 07
2
postscript problem
hello all, when trying to produce a plot with the following code postscript("g6-5000-0705-b.ps") par(mfrow=c(4,1)) for (i in 1:4) { somc<-cumsum(betaC[,i])/c(1:N) plot(somc,ylim=c(min(somc),max(somc))); } dev.off() I get a postscript file g6-5000-0705-b.ps, but if I try to open it with ghostscript, or to convert it to pdf, I get the following error : Error: /invalidfont in