similar to: R-gui and chinese character

We have extracted parameters from physiological measurements by fitting SSlogis-like curves with nlsList and nlme. We presented residuals plot in a paper, but a referee argues that these cannot be included (too technical), and r-square values should be given instead to compare the goodness of fit with those of other authors. I remember that 30 years ago in my stat 101, I learned that r-square is

Is there an easy way to remove data frame columns by name instead of by index? The following gives the idea remove<-c("subj","drug") data[-remove] I found a solution with a few evals and substitutes, similar to that used in reshapeLong, but there must be an easier way out. Dieter --------------------------------------- Dr. Dieter Menne Biomed Software 72074 T?bingen Tel

Dear R2008, In Windows 2000, I used the following shell extension to allow right-click rgui start in a directory (assuming rgui.exe is on the path: ----- REGEDIT4 [HKEY_CLASSES_ROOT\Directory\shell\Run R] [HKEY_CLASSES_ROOT\Directory\shell\Run R\command] @="Rgui.exe --no-restore --no-save --internet2" ---- I switched to Vista this year. For reasons I don't understand, I have

Hi Dieter, Sorry my mistake. I wanted to convert them into Decimal (not Hexadecimal). Given this string, the desired answer follows: > ascii_str <- "ORQ>IK" 79 82 81 62 73 75 > ascii_str2 <- "FDC" 70 68 67 - Gundala Viswanath Jakarta - Indonesia On Mon, Dec 22, 2008 at 5:49 PM, Dieter Menne <dieter.menne at menne-biomed.de> wrote: > Gundala

I am confused by the logic of renaming: # Rename individual list items? Empl<-list(employee="Anna",spouse="Fred") names(Empl)<-c("empl","spo") names(Empl) #[1] "empl" "spo" # worked like a charm... but names(Empl[1])<-"newempl" # no error message, yet .... names(Empl) #[1] "empl" "spo" #

I can't get the PERL subexpression translated to R. Following, for example, B. Ripley's http://finzi.psych.upenn.edu/R/Rhelp02a/archive/58984.html I am using sub, but it looks like an ugly substitute. Assume I want to extract the first alpha part and the first numeric part, but only if they are in sequence. Do I really have to use the sub twice, first extracting the first variable, then

Dear friends of nlme, Running quinModel (Pinheiro/Bates page 380) on R (current release, windows) gives: Nonlinear mixed-effects model fit by maximum likelihood Model: conc ~ quinModel(Subject, time, conc, dose, interval, lV, lKa, lCl) Data: Quinidine Log-likelihood: -497 Fixed: lV + lKa + lCl ~ 1 lV lKa lCl 5.382 -0.273 2.470 Random effects: Formula: list(lV ~ 1, lCl ~ 1)

Hi Dieter and R community: I tried both of these three versions with ylim as suggested, none work: I am getting only single (pch = 16) not overlayed (pch =3) everytime. *vs 1* require(lattice) xyplot(Sepal.Length ~ Sepal.Width | Species , data= iris, panel= function(x, y, subscripts) { panel.xyplot(x, y, pch=16, col = "green4", ylim = c(0, 10)) panel.lmline(x, y, lty=4, col =

Dear R-Listers, to measure the psychometric curve of pitch discrimination, one sequentially presents two tones of slightly different pitch to an observer (animal will do), and asks "which is higher". The pschometric curve is the fraction of correct responses plotted against the pitch difference. It passes through 50% (pure guessing) at zero and normally approaches 100% at large

Using a formula converted with as.formula with lme leads to an error message. Same works ok with lm, and with lme and a fixed formula. # demonstrates problems with lme and as.formula demo<-data.frame(x=1:20,y=(1:20)+rnorm(20),subj=as.factor(rep(1:2,10))) demo.lm1<-lme(y~x,data=demo,random=~1|subj) print(summary(demo.lm1)) newframe<-data.frame(x=1:5,subj=rep(1,5))

Dear List, creating factors in a given non-default orders is notoriously difficult to explain in a course. Students love the ifelse construct given below most, but I remember some comment from Martin M?chler (?) that ifelse should be banned from courses. Any better idea? Not necessarily short, easy to remember is important. Dieter data = c(1,7,10,50,70) levs =

Dieter Menne wrote: > Hi, Jim, > > there is a typo at the bottom of plotCI: there is an y.to.in which should be > x.to.in. > > See list for an example. > > http://article.gmane.org/gmane.comp.lang.r.general/147103 > > Should be: > nz <- (abs(ui - pmin(x + gap, ui)) * x.to.in) > 0.001 > > Dieter > > Hi Dieter, Thanks for the fix. I have

I have problem getting the concept of a nested fixed variable into the nlme scheme. I fear the question is very stupid. In the past I had asked this before, and never got a reply (in other cases, the response was within hours). I also checked the S-list, where several similar enquiries of other people are orphaned. We have a cross-over design, where patient are treated two weeks with placebo,

Dear List, After having installed R 2.6.0/Windows 2000, my trusted command script to build and install my package fails with an error message I do not understand. I have installed a fresh copy of Rtools, and made sure that these are the first on the path. For testing, I am using a package version from an older backup where I am sure that everything else was ok.

Dear List, assume I want to make a minor local change in a package that is supplied as .rda. For example, I want to get rid of the non-verbose-protected "Iteration" message in GLMM/lme4. Probably I have to load / change / save the package, but could someone help me to get the syntax right? Dieter Menne

Dear friends of lattice, I know how to position trellis plots with print(...,split,more=T) or (...position). Sometimes I wish I had something like the old "par(mfcol=2, mfrow=3)" mechanism, where the next free viewport is automatically chosen. I tried fiddling with grid-viewports, but could not find an easy solution. Did I miss something? Dieter Menne

Dear List, I am struggling understanding S4 classes. For example, when GLMM summary(glmmML( whatever)) outputs the following line: Estimate Std. Error DF z value Pr(>|z|) (Intercept) 0.856 0.319 45 2.68 0.0073 How do I access the Pr column? Dieter

deriv seems to have problems with a minus-sign before a bracket. Below are four examples of the same function, the top one is wrong, all others are correct (hopefully). Rest of expression not shown, it is the same for all versions. _ platform i386-pc-mingw32 arch x86 os Win32 system x86, Win32 status major 1 minor 3.0 year 2001 month 06 day 22 language R

Dear R-Listeners, as the Sweave faq says: http://www.ci.tuwien.ac.at/~leisch/Sweave/FAQ.html creating several figures from one figure chunk does not work, and for standard graphics, a workaround is given. Now I have a multipage trellis plot with an a-priori unknown number of pages, and I don't see an elegant way of dividing it up into multiple pdf-files. I noted there is a "page"

Disclaimer: I have read plotmath, but maybe it's too late today: How do I get the two labels to be the same: plot.new() lab =expression(paste("Estimated ", t[50]," from tgv")) text(0.5,0.5,lab) # Should look the same as above. I could not get the substitute right: what = "tgv" lab =expression(paste("Estimated ", t[50]," from ",what))