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buffer2
2007 Jan 08
3
Speeding things up
Hi,
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] -
sdata$value[cnt]
}
else sdata$ddtd[cnt] <- 0
}
return(sdata)
Thank you,
Benjamin