search for: expval

hi R-help! I would like to know a simple and easy way (if posible) to do the following data manipulation. I have a matrix of experimental data (with replicae in time) >experiment<-data.frame(times=c(0,0,10,10,20,20,30,30),expval=c(1,1,2,2,3,3,4,4)) > experiment times expval 1 0 1 2 0 1 3 10 2 4 10 2 5 20 3 6 20 3 7 30 4 8 30 4 and a set of simulated values > simul<-data.frame(times=c(0,10,20,30),simul=c(3,4,5,6)) > simul times simul 1...

I'm trying to create a function which will allow me to subset a data set based on values of various specified variables. I also want to then apply some other function(s) (e.g., summary). This is what I've tried so far.... > test.fx <- function(dta, expvar, expval) { + newdta <- subset(dta, eval(expvar)>expval) + summary(newdta$eval(expvar)) + } > > test.fx(fyc04s, quote(totexp04), 100) Error in summary(newdta$eval(expvar)) : attempt to apply non-function > The subset works fine, but the my attempt to access the specified variable...

...R-help! > > I would like to know a simple and easy way (if posible) to do the following > data manipulation. I have a matrix of experimental data (with replicae in time) actually, they seem to be data frames. > > >experiment<-data.frame(times=c(0,0,10,10,20,20,30,30),expval=c(1,1,2,2,3,3,4,4) ) > > > experiment > times expval > 1 0 1 > 2 0 1 > 3 10 2 > 4 10 2 > 5 20 3 > 6 20 3 > 7 30 4 > 8 30 4 > > and a set of simulated values > > > simul<-data...

I haven't been an R lister for a bit, but I hope to enlist someone's help here. I think this is a simple question, so I hope the answer is not much trouble. Can you please respond directly to this email address in addition to the list (if responding to the list is warranted)? I have a histogram and I want to see if the data fit a Poisson distribution. How do I do this? It is