similar to: Applying qqmath using gamma distribution...

Hello! I am trying with this question again: I would like to test few distributional assumptions for some behavioral response data. There are few theories about true distribution of those data, like: normal, lognormal, gamma, ex-Gaussian (exponential-Gaussian), Wald (inverse Gaussian) etc. The best way would be via qq-plot, to show to students differences. First two are trivial: qqnorm(dat$X)

David, Duncan, > Hi > > Following on David's rate argument > > try (with modifications of pch and grid) > > rate <- 1/4 > shape = 8 > rate = c(rep(1/4,100),rep(1/3,100)) I don't think the problem is related to the rate argument, which can well be vectorized, as is the case for a number of arguments in distrib functions in R (note that you are redefining it

I have installed lme4 library, but when I try something with lmer() function, I receive error message. On the other hand, I can use lme() function from the same library. Are those two the very same function or not? I am a bit confused. I am using: $platform: "i386-pc-linux-gnu" $arch: "i386" $os: "linux-gnu" $system: "i386, linux-gnu" $major: "2"

Hello! Interesting thing is that I cannot install rgl. It reports: checking for X... no configure: error: X11 not found but required, configure aborted. ERROR: configuration failed for package ?rgl? * Removing ?/usr/local/lib/R/site-library/rgl? I am pretty sure that my X11 is fine. Does anyone know why I got this error message? Best, PM

Hello! I am truing to compile an R-package having c-code. I put foo.c in src/ folder and useDynLib("foo") in NAMESPACE file. When trying R CMD check, I got an error message that shared object 'foo' is not found. Then I did R CMD SHLIB foo.c first. However, after that, I got warnings from R CMD check that there is an object file in /src folder. Even worse is if I run R CMD

Hello, Recently, I have asked for a help with building graphs, and I got few great advices. Now, my appetite is growing :) and I wander how to add legend for two (or more) lines in following example: matplot(DAT[, c(3,4)], type="b", ylim=c(0,8), xaxt="n", yaxt="n", + pch=c(21,22), col="black", lty=c("dashed","solid"), xlab="",

Hi, Don't have a clue what teh following error message generated by this function call: qqmath( ~val|ind,data = xx ,distribution = function(p){ qt(p,df=20)} ,ylab="Sample Quatinles" ,xlab="Theoretical Quantiles" ,panel=function(x,y) { panel.qqmathline(y , distribution=function(p) qt(p,df=20)

Does the 'groups' option on qqmath just color the points differently in the main distribution or does it actually overlay separate quantile plots for each subset? I would like to be able to do the latter. --Rich Richard Kittler AMD TDG 408-749-4099

Hello, I can't seem to make qqmath plot text. v <- rnorm(8) qqmath(~v) # this is ok, but qqmath(~v, panel=function(x, y) { points(x, y) text(0, 0, 'print me', cex=2)}) isn't ok. The axis frame is printed properly (ie, as in qqmath(~v)), but neither 'print me' nor the points show up on the graph. I can, however, see the upper half of the word 'me' in the

Hello ALL! I have a problem to plot factor (lets say gender) as a line, or at least both line and point, from ols model: ols1 <- ols(Y ~ gender, data=dat, x=T, y=T) plot(ols1, gender=NA, xlab="gender", ylab="Y", ylim=c(5,30), conf.int=FALSE) If I convert gender into discrete numeric predictor, and use forceLines=TRUE, plot is not nice and true, since it shows values

Having solved this problem, I am posting this so that the next time I search for how to do this I will find an answer... Using qqmath(..., groups=num) creates a separate qq distribution for each group (within a panel). Using the 'col' or 'pch' argument does not (usually) work because panel.qqmath sorts the data (but not 'col' or 'pch') before plotting. Sorting

In qqmath, how would one go about having 'distribution' change with panel.number? I've tried set.seed(1) mydata <- data.frame(ind = factor(rep(2:4, each = 100))) mydata$val <- rt(300, df=rep(2:4, each = 100)) plot<-qqmath(~ val | ind, layout=c(3,1), data = mydata, prepanel = function(x, distribution, ...) {

The data are not normally distributed when untransformed and I'm trying various transformations to see if any would be appropriate to use. The lattice book (fig. 3.10) shows a 2-sample Q-Q plot with an abline but the code for the figure does not include the line. I'd appreciate a pointer to a reference on how to add an abline to a one-sample qqmath() plot in lattice. Rich

Hello, I would like to inlude the Q-Q plot by "qqmath" into a panel with other plots, say, using par(mfrow=c(1,2)). How can this be done given that "qqmath" refreshes the plotting window and there seems to be no series coming out of it? Thanks Serguei [[alternative HTML version deleted]]

Hello! I am trying to install gtkDevice package, but without success. It is complaining about: * Installing *source* package 'gtkDevice' ... checking for gtk-config... no checking for gtk12-config... no ERROR: Cannot find gtk-config. I am using Ubuntu 6.06, and I cannot find that package in the repositories. Is there a remedy of any kind? What can I do? Best, Petar M.

Hello ALL! I am running Fedora 16 x86_64. Due to some dubious problems, that i couldn't resolve, with the TeXLive (2007, which is a default), I removed it. That removed R as well, and some other dependent packages. Then, I installed TeXLive 2011 from CTAN. However, when I wanted to install R, from Fedora's repositories, it asks for some TeX dependencies (for example, tex-preview,

Dear group, I tried to generate labels for every second tick in lattice (qqmath). Version: 0.14-16 Date: 2006/12/01 R version 2.4.1 (2006-12-18) An example: library(lattice) numy=100 y=runif(numy,min=0,max=1) sig=0.05 numsig=length(which(y<sig)) tck.no=11 # number of ticks tcks=1:tck.no labl=as.character(0.1*tcks-0.1) # label for all ticks labl[seq(2,tck.no-1,2)]="" # delete

I am using R 2.1.1 on i486-pc-gnu-linux (Ubuntu Breezy). Recently, I bought new laptop HP nx8220 and installed Breezy with a few problems starting X-Windows. Nevertheless, I followed some instruction, managed to start X, and added R from the Ubuntu's repositories. When I try to produce any graph (like plot, bwplot etc.), I receive an error message: can't find X11 font Error in X11( ....

Dear R list, The code below puts qq-plots for two of three groups on the one plot. However the legend includes all three groups, ie the auto.key ignores the subset instruction. Is there an easy way to get around this, so that only those groups plotted are included in the legend? y1<-rnorm(100); y2<-rnorm(100)+1; y3<-rnorm(100)+2; y<-c(y1,y2,y3)

Hello ALL! First, I apologize for sending question that spill-out from the scope of this list. However, you might be essentially the best informants. In brief, I am thinking to give second shot to the Debian. Currently I am using Ubuntu 9.04, but Debian still teases me, so to say. I used to use Debian testing (Lenny at that time), but when Lenny became stable, things became very shaky in