On 05/09/2011 08:58 AM, Alaios wrote:
Dear all,
I would like to ask your help concerning an error message I get.
I have the following struct
str(CRagentInTime[[1]])
List of 2
$ timelag: int 0
$ CRagent:List of 50
..$ :List of 3
.. ..$ CRmap: num [1:256, 1:256] NA NA NA NA NA NA NA NA NA NA ...
.. ..$ xy : num [1:2] 10 177
.. ..$ sr : num [1:49] -94.9 -92.8 -79.5 -97.6 -78.4 ...
and I wanted to select all the sr fields for every of each one of the 50
CRagent Lists I have.
So I tried something like
str(CRagentInTime[[1]][[2]][[1:10]]$sr) and I get a message that
Error in CRagentInTime[[1]][[2]][[1:10]] :
recursive indexing failed at level 3
Selecting multiple elements of a list using an expression like [[1:10]]
does not work. For example:
x <- list("a","b")
x[[1:2]]
produces
Error in x[[1:2]] : subscript out of bounds
In general, the expression x[[1:2]] is not meaningful, as the elements
of the list may be of different type, with no way to concatenate them.
strange to me is that this one works
str(CRagentInTime[[1]][[2]][[1]]$sr)
num [1:49] -106 -92.9 -101.3 -81.9 -96.7 ...
I would like to thank you in advance for your help
Best Regards
Alex
_______________________
Patrick Breheny
Assistant Professor
Department of Biostatistics
Department of Statistics
University of Kentucky
______________________________________________
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.
