Does
A = lapply(A,function(x)if is.null(x) 0 else x)
or
for(i in 1:length(A))if(is.null(A[[i]]))A[i] = 0
do what you want?
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Mon, 29 Nov 2010, LCOG1 wrote:
Hi everyone,
I am posting this because i know its easy and i cant for the life of me
figure out how to do it though i have tried and through a ridiculously
complex loop made it happen. I need to convert some list elements of NULL
value to 0s so they mesh with my data frame properly. So for
A<-list(1,NULL)
returns
[[1]]
[1] 1
[[2]]
NULL
Would instead return
[[1]]
[1] 1
[[2]]
[1] 0
The nabble posts seem to indicate dealing with NULLs can be tricky so i am
attributing my lack of success to that, mainly so i can live with myself and
asking the list such a simple question. Sorry again guys.
JR
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