Hi all, Let's say I have a vector:
vv<-c(1,2,3) And suppose I have a function f(a,b), which is a function of 2 scalar inputs. I would like to evaluate this function separately for each element of the vv vector while the second input to f( ) will be the previous output from f( ). So, the valuation of f() has a dependency on the previous f( ) valuation (recursive). This type of calculation is easy to set up with a for loop but that will run slow. How can I achieve this with apply family of functions please? I have the same question for the case when vv is a data.table instead of a vector. Thank you for any help. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
