Thanks for your reply, I couldn't use the method what the example gives. Because Data frame is quite big, and it has so many rows which are repeated. I am not pretty sure about the range of 1000. It turns out I should merge those row which repeated. Tammy
> From: simon.pick...@bto.org > To: metal_lical...@live.com; r-help@r-project.org > Subject: Re: [R] Merging > Date: Tue, 17 Mar 2009 10:02:51 +0000 > > Hi, > > I'm pretty sure you dont mean "merge" since merge() creates a new big data > frame from two small ones. It appears that you want to omit some rows. > > As I said before, get used to selecting rows like this > > data.frame<-data.frame[data.frame$conditional.rows>1000,] > > (for example) > > Although I dont have a clue what criteria you are using to select the rows > you want... > > Simon. > > > > > > > > > Hi, All. > > > > > > I have a data frame with the part as : > > > > ..... > > 142 2006-02-22 16:28:18 useractivity_act 8 0 > > 143 2006-02-22 16:28:26 4 2 0 > > 144 2006-02-22 16:28:28 3 3 0 > > 145 2006-02-22 16:28:31 4 4 1 > > 146 2006-02-22 16:28:35 3 159 0 > > 147 2006-02-22 16:31:14 useractivity_idle 0 0 > > 1421 2006-02-22 16:28:18 useractivity_act 8 0 > > 1431 2006-02-22 16:28:26 4 2 0 > > 1441 2006-02-22 16:28:28 3 3 0 > > 1451 2006-02-22 16:28:31 4 4 0 > > 1461 2006-02-22 16:28:35 3 159 25 > > 1471 2006-02-22 16:31:14 useractivity_idle 0 0 > > .... > > > > I want to merge the above as > > 142 2006-02-22 16:28:18 useractivity_act 8 0 > > > > 143 2006-02-22 16:28:26 4 2 0 > > > > 144 2006-02-22 16:28:28 3 3 0 > > > > 145 2006-02-22 16:28:31 4 4 1 > > > > 146 2006-02-22 16:28:35 3 159 25 > > > > 147 2006-02-22 16:31:14 useractivity_idle 0 0 > > > > How should I do`?? > > Thanks. > > > > Tammy > > _________________________________________________________________ > > Invite your mail contacts to join your friends list with Windows Live > > Spaces. It's easy! > > http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > _________________________________________________________________ Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy! http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
