search for: aggrig

...for my sientific work (I allready tryed out apps like Mathematica etc.) . By now im facing with following problem. I use several packages like tseries and rmetrics. My main focus is working on minute financial data like sp500 and nasdaq. I can read data and mak some correct plots. But now i like to aggrigate the data by time. I tried to use time and frequency to make plots about values and time (e. g. plot the date over one day). Here a example of my standard minute data: TICKER,DATE,TIME,OPEN,HIGH,LOW,CLOSE ND,01/02/1997,08:30:00,821.36,821.36,821.36,821.36 ND,01/02/1997,08:30:00,824.55,824.55,824...

I just setup a Planet aggregator site for Ruby on Rails blogs and the wiki. It''s at: http://www.planetrubyonrails.org/ jim

...ike this, id col1 col2 score 1 A B 40 2 B C 55 3 C D 4000 4 D E 100 5 E F 300 I want the out put as List [1] A B C [2] D E [3] F Basically the split should be based on the DF$score > 200, and all the col1 and col2 values should be aggrigated. Request your kind help, Regards, karthick -- View this message in context: http://r.789695.n4.nabble.com/DF-grouping-tp4381310p4381310.html Sent from the R help mailing list archive at Nabble.com.