On Thu, Oct 4, 2012 at 2:54 PM, anto.r <[email protected]> wrote: > I have an 4D named array (the result of recast() on a dataframe) and would > like to convert it to a list with the names retained. > > Example: >>my.df<-expand.grid(name=c("Alf","Que"), month=c("May","Jun"), > year=c("2011","2012")) >>my.df$tmax<-sample(15:20,4) >>my.df$tmin<-sample(10:15,4) >>my.df.melt=melt(my.df) >>my.df.cast=cast(my.df.melt, year~name~month~variable) > > I want to convert it to a list so I can access the elements by name like >>my.df.cast$tmax$May > to get the corresponding year-name matrix > > This assuming, lists provide an easier way to handle this data. Does it?
I might actually stick with an array, but avoid the dollar sign syntax: my.df.cast[,,"May",] would be one way. Cheers, M > Also, may be there is a way to get the list I want from my.df without going > through the melt and cast. Any suggestions are welcome. > > Thanks in advance > Anto > > PS: I came across threads for converting list to array but not the other way > round. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/convert-multi-dimensional-array-to-list-tp4645011.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [email protected] 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. ______________________________________________ [email protected] 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.
