I'm a little confused on your data structure -- can you use dput() as described here [1] to give a small reproducible example?
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example Michael On Wed, Aug 1, 2012 at 10:38 AM, gail <ortog...@yahoo.de> wrote: > Thank you!!! But I realise I've simplified my data to the point that your > solution doesn't actually work -- not your fault, mine! My list is actually > more complicated than what I presented it to be; it's not composed of > numerical matrices but of lists, each being composed of 7 columns, the first > two of each (the ones that I am interested in, x and y) being numerical. > This is what my list really looks like (truncated): > >> summary(mylist) > Length Class Mode > moh6 7 density list > moh7 7 density list > moh8 7 density list > ... > etc. > >> summary(mylist[[3]]) # I've taken number 3 as an example, but they're all >> the same > Length Class Mode > x 512 -none- numeric > y 512 -none- numeric > bw 1 -none- numeric > n 1 -none- numeric > call 2 -none- call > data.name 1 -none- character > has.na 1 -none- logical > > Any suggestion how to get the max of column y for each sub-list (moh6, moh7, > moh8 etc.), and to the max of all these individual maxes? By the way, > > lapply(list1,FUN=function(x)x[,2][which.max(x[,2])]) > > gives me the individual maxes (for a list composed of numerical matrices), > but how do I get to the overall max? Possibly max(unlist(list1)) if I understand you correctly. > > Many thanks ... > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/apply-function-over-same-column-of-all-objects-in-a-list-tp4638681p4638705.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ______________________________________________ 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.
