On 05/09/2011 09:24 AM, Alaios wrote:
So the only thing that might work is a for..loop to collect all these together?
Best REgards
Alex
You could also use sapply:
x <- list(list(One="a",Two=c("b","c")),list(One="d",Two=c("e","f")))
sapply(x,'[[',"Two")
[,1] [,2]
[1,] "b" "e"
[2,] "c" "f"
In your example, it seems
sapply(CRagentInTime[[1]][[2]],'[[',"sr")
would work, but I am not in a position to replicate your code, as is it
not self-contained.
_______________________
Patrick Breheny
Assistant Professor
Department of Biostatistics
Department of Statistics
University of Kentucky
--- On Mon, 5/9/11, Patrick Breheny<patrick.breh...@uky.edu> wrote:
From: Patrick Breheny<patrick.breh...@uky.edu>
Subject: Re: [R] Recursive Indexing Failed
To: "Alaios"<ala...@yahoo.com>
Cc: "R-help@r-project.org"<R-help@r-project.org>
Date: Monday, May 9, 2011, 2:18 PM
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
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