On Wed, 27 Oct 2010, Charles C. Berry wrote:
On Wed, 27 Oct 2010, Alex P. wrote:
Hello All,
I have multiple "list of lists" in the form of
Mylist1[[N]][[K]]$Name_i,
with N=1..6, K=1..3, and i=1..7. Each Name_i is a matrix. I have 30 of
these objects Mylist1, Mylist2, ...
I would like to merge these lists by each Name_i using rbind, but I
couldn't figure out how to do it. What I want at the end is a single "list
of lists", again in the form of Mylist[[N]][[K]]$Name_i. Manually doing it
is not feasible given the large number of Mylist objects.
Turn them into a single array of mode 'list', then do the rbind'ing, and save
the result as an array (or see ?relist for imposing the nested structure of
the orignal lists)
Something like:
I see a few hiccups below.
Maybe Alex P. should include a minimal, self-contained example that
RespondeRs could try out...
objs <- paste('MyList',1:30,sep='')
big.list <- lapply( objs, get )
for (i in 1:4) big.list <- unlist(big.list,recursive=FALSE)
for (i in 1:3) ...
dim( big.list ) <- c(30, 6, 3, 7 )
dim( big.list ) <- rev( c(30, 6, 3, 7 ) )
res <- apply( big.list, 2:4, rbind )
dim(res) <- c( 30, 3, 7 )
res <- apply( big.list, 1:3, function(x) list( do.call( rbind, x ) ))
Chuck
HTH,
Chuck
Thanks in advance,
Alex
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Charles C. Berry (858) 534-2098
Dept of Family/Preventive
Medicine
E mailto:cbe...@tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
______________________________________________
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.
Charles C. Berry (858) 534-2098
Dept of Family/Preventive Medicine
E mailto:cbe...@tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
______________________________________________
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.
