search for: betarea1

...rame like this: nsps area 1 1 4 2 0 9 3 1 4 4 1 4 5 1 4 6 1 9 7 0 4 8 1 9 9 0 4 10 1 9 ... I try to make another data.frame like this: nsps area 1 4 4 2 3 9 using tapply, it work: > tapply(betarea1$nsps,betarea1$area,sum) 4 9 16 25 36 49 64 81 100 121 144 4 10 11 19 25 34 36 44 49 49 56 But i need it on a data.frame where the first line of this tapply result is the area column and the second line is the nsps column. Any idea for make this? Thanks Ronaldo -- A de...