Hi,
Sorry to bother with something that should be simple, but I can't find it.
Suppose I have a list, each element of which is a 2xN dataframe, where N
could be different for each element.
Is there some simple structure to let me examine all the elements of
each element's first column? For example:
>foo
$first
[,1] [,2]
[1,] 1 4
[2,] 2 5
[3,] 3 6
$second
[,1] [,2]
[1,] 1 6
[2,] 2 8
[3,] 3 6
[4,] 4 8
To find the maximum element in all first columns (say, to set the range
of a plot where all first columns are x-data), I'd like the legal
equivalent of
>max(foo[[*]][,1])
(where here "*" is a wildcard intended to span all elements of foo)
Or do I have to use one of the apply() functions?
thanks
Carl
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
