convert multi dimensional array to list
On Thu, Oct 4, 2012 at 2:54 PM, anto.r <anto.rajaa at gmail.com> 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.
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