question about aggregate
try this table(sci[,2]=0,sci[,1]=L) Weidong Gu
On Sat, Oct 22, 2011 at 7:51 AM, Adel ESSAFI <adel.safi at imag.fr> wrote:
Hello, is there any help please. Regards 2011/10/21 Adel ESSAFI <adelessafi at gmail.com>
Hello I am discovering R and I find it is really very powerful. However, I find some newbie difficulties. Here, I have a data frame with manu values that I want to calculate the frequency (the nomber of line) of the some criteria. For exemple here, ?I want it to print the number of occurence where sci[,2]=0 and sci[,1]=L. In my exemple, he is printing the number of the line in the result data frame. however, I have at least 90 line with sci[,2]=0 and sci[,1]=L. Thank you in advance for any input.
?aggregate(sci[,5],list(sci[,2],sci[,1]),frequency)
? ?Group.1 Group.2 x 1 ? ? ?0.0 ? ? ? L 1 2 ? ? ?0.2 ? ? ? L 1 -- PhD candidate in Computer Science Address 3 avenue lamine, cit? ezzahra, Sousse 4000 Tunisia tel: +216 97 246 706 (+33640302046 jusqu'au 15/6) fax: +216 71 391 166
-- *PhD candidate in Computer Science Address 3 avenue lamine, cit? ezzahra, Sousse 4000 Tunisia tel: +216 97 246 706 fax: +216 71 391 166* ? ? ? ?[[alternative HTML version deleted]]
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