Thanks you,
I can get the length of aa with length(unlist(aa)). If aa has 4 dimensions, I
imagine I'd need to do
max(sapply(aa,sapply,sapply,length)
How can I do this in a generic way? That is in a loop. I am clear about the
exit condition for the loop.
d<-1
start loop
if d = length(unlist(aa)) then exit loop
else
d<-d * <expr>
How do I construct <expr> such that it does
> d<- d * length(aa) # first pass
> d<- d * max(sapply(aa, length)) # second pass
> d<- d * max(sapply(aa, sapply, length)) # third pass
> # ? # # fourth path etc
(Apologies for the pseudo code describing the loop; I am not near a machine
with R)
One way I can thing of is to create a loop counter variable, say lc<-1 and to
increment it within the loop and then use a switch statement to execute the
appropriate expression. This sems like a kludge to me.
Is there a neater way?
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