Dear R users I have a list, as follows:
intvl.period.myrs
$Devonian [1] 4.8 4.2 9.5 5.7 $Ordovician [1] 7.2 5.1 10.2 1.9 $Silurian [1] 4.7 3.0 7.8 2.0 3.3 1.6 2.6 2.7 I want to write a loop that will sum up the values in each part, and give me a vector containing the (in this case 3) summed values this is what I have so far: for (i in 1:length(names(intvl.periods.myrs)) { my.new.vector<-sum(intvl.periods.myrs[i] } This does not work and probably for obvious reasons. Thanks Martin -- Martin Hughes MPhil/PhD Research in Biology Rm 1.07, 4south University of Bath Department of Biology and Biochemistry Claverton Bath BA2 7AY Tel: 01225 385 437 m.hug...@bath.ac.uk http://www.bath.ac.uk/bio-sci/biodiversity-lab/hughes.html ______________________________________________ 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.