[Q.] How to create an array of lists, or structures the most elegant way? 
   
  There have been questions in the past but none too recently...I want to know 
if the following looks OK to you guys or if there is a better way to create an 
array of lists:
   
   # PREAMBLE ... JUST TO GET THINGS GOING
 makeList<- function(data, anythingElse) {
  rval <- list( data = data,   
    anythingElse = anythingElse 
   )
  class(rval) <- "myListOfArbitraryThings"
  return(rval)
 }
 # make up some arbitrary data
 payload<- list( as.matrix(cbind(1,1:3)), 
   10:15, 
   data.frame(cbind(x=1, y=1:10), fac=sample(LETTERS[1:3], 10, repl=TRUE))
        )
   
   # HERE'S THE ARRAY-CONSTRUCTION PART THAT I WANT CRITIQUED:
 n<- 3 # number of lists in the array of lists
 v<- vector("list", n) # <--- IS THIS THE BEST WAY TO CREATE AN ARRAY OF LISTS?
 # fill the array with essentially arbitrary stuff:
 for (i in 1:n) v[[i]]<- makeList(payload[[i]], i)
   
   
  Thanks,
   
  Jack.
  
 

                
---------------------------------


        [[alternative HTML version deleted]]

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

Reply via email to