[R] Speeding things up

From: Benjamin Dickgiesser <dickgiesser_at_gmail.com>
Date: Mon 08 Jan 2007 - 10:00:30 GMT


is it possible to do this operation faster? I am going over 35k data entries and this takes quite some time.

	for(cnt in 2:length(sdata$date))

		if(sdata$value[cnt] < sdata$value[cnt - 1])	{
			sdata$ddtd[cnt] <- sdata$ddtd[cnt - 1] + sdata$value[cnt - 1] -
		else sdata$ddtd[cnt] <- 0

Thank you,

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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. Received on Mon Jan 08 21:05:06 2007

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