stacking effectively - without loops
Dimitri Liakhovitski <dimitri.liakhovitski at gmail.com> [Tue, Nov 02, 2010 at 09:57:04PM CET]:
Hello! I have 2 vectors: x<-letters[1:5] y<-1:3 Is there a way - without loops - to create a data frame such that we repeat the whole "y" within each level of "x" so that it looks like this: a 1 a 2 a 3 b 1 b 2 b 3 c 1 c 2 c 3 etc?
?expand.grid
Johannes H?sing There is something fascinating about science.
One gets such wholesale returns of conjecture
mailto:johannes at huesing.name from such a trifling investment of fact.
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