Re: [R] Using which function with xts

2010-07-14 Thread Wu Gong
Correction: data[abs(data$price-avg)<=3*std,] - A R learner. -- View this message in context: http://r.789695.n4.nabble.com/Using-which-function-with-xts-tp226p2289166.html Sent from the R help mailing list archive at Nabble.com. __ R-help

Re: [R] Using which function with xts

2010-07-14 Thread Wu Gong
Let's say your "data" has 2 columns: one is "date" and another is "price", then avg = mean(data$price, na.rm=T) std = sd(data$price, na.rm=T) The data after those unwanted removed should be: data[data$price-avg<=3*std,] - A R learner. -- View this message in context: http://r.789695.n4.n

[R] Using which function with xts

2010-07-14 Thread Manussawee Sukunta
Hi everyone: I did a search over the internet and still couldn't find answer to my problem. I have a series of prices that I'm trying to clean up by removing any prices greater than 3 times the standard deviations. So, say that prices are: price1 2010-06-18 08:00:06.916