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Dear All I would like to produce interaction boxplots and this seems to work: par(mfrow=c(2,2)) A=sample(rnorm(50,50,10)) B=sample(rnorm(50,100,10)) Test=merge(A,B,by=0)#by=0 where 0 is the row.names TreatA=(gl(2,50,100,labels=c("High","Low"))) TreatB=rep(gl(2,25,50,labels=c("High","Low")),2) Newdata=data.frame(TreatA,TreatB,Test) bwplot(x~TreatA:TreatB,data=Newdata) However, I would prefer the X axis labels to be different, such that there are two label row...

...ent A to change upper and ed50. We want to know if treatment B blocks the effect of treatment A and if so to what degree. This is similar to the Ludbrook example in Venables and Ripley, however they only had one treatment and I have two. my approach The dataframe is structured like this: expt treatA treatB dose force. 1 - - 0.1 20 1 - - 0.2 40 ... 4 + + 0.1 20 4 + I used a groupedData object: mydata=groupedData(force ~ dose | expt) I used an nlme obect to model the data as follows (pseudocode): myfit.nlme <- nlme(force ~ ss_tpl(dose, upper, ed50,slope), fixed=list(ed50~fact...

.... This is done for each combination of two factors (treatmentA and Treatment B) each having two levels (- and +). Each set of measurements is obtained on a muscle from a different animal (i.e. each dose response curve represents an independent experiment). The data are stored as follows: expt treatA treatB dose force I use a groupedData object mydata=groupedData(force ~ dose | expt) I used an nlme obect to model the data as follows (pseudocode): myfit <- nlme(force ~ ssThreeParLogistic(dose, upper, ed50,slope), fixed=list(ed50~factor(treatmentA)*factor(treatmentC))) The ThreeParLogist...

...plications. msvcrt/tests: Avoid size_t in traces. usp10: Update the character data tables to Unicode 7.0.0. libwine: Update the codepage tables to Unicode 7.0.0. opengl32: Make sure the function table is initialized in all threads. Andrew Eikum (8): ole32: Implement CoTreatAsClass for classes without AutoTreatAs. ole32: Respect TreatAs in CoCreateInstance. packager: Add stub Packager implementation. packager: Add loading support for Ole10Native storage objects. packager: Implement IOleObject::SetClientSite. packager: Implement IOleObject::...