Re: [R] getting the value from previous row
Thanks it helped a lot - Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/getting-the-value-from-previous-row-tp4554761p4560577.html Sent from the R help mailing list archive at Nabble.com. __ 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.
[R] getting the value from previous row
Hi I've a dataset with record A = 100,200,300,400... There will be a parameter n. say n=10 means i have add 10% of previous value to the current row current_Val New_value 100 100 200210 (200+10) 300330( 300 +20+10) 400 460 (400+30+20+10) I'm using a loop But i want takes a long time. Please help - Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/getting-the-value-from-previous-row-tp4554761p4554761.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] getting the value from previous row
Le vendredi 13 avril 2012 à 06:09 -0700, arunkumar a écrit : Hi I've a dataset with record A = 100,200,300,400... There will be a parameter n. say n=10 means i have add 10% of previous value to the current row current_Val New_value 100 100 200210 (200+10) 300330( 300 +20+10) 400 460 (400+30+20+10) I'm using a loop But i want takes a long time. Please help One solution is: A - 1:4 * 100 A + cumsum(c(0, A[-length(A)]) * 0.1) [1] 100 210 330 460 Hope this helps __ 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.
