Re: [R] Replacing values without looping

Thanks! na.locf was spot on Very fast approach to this type of problem. -- View this message in context: http://r.789695.n4.nabble.com/Replacing-values-without-looping-tp3602247p3605203.html Sent from the R help mailing list archive at Nabble.com. __

Re: [R] Replacing values without looping

Hi > Hi, > > If you truly have an array, this is option that should be much faster > than a loop: > > index <- which(is.na(dat)) > dat[index] <- dat[index - 1] > > the only catch is that when there previous value is NA, you may have > to go through the process a few times to get them all. One

Re: [R] Replacing values without looping

Hi, If you truly have an array, this is option that should be much faster than a loop: index <- which(is.na(dat)) dat[index] <- dat[index - 1] the only catch is that when there previous value is NA, you may have to go through the process a few times to get them all. One way to automate this wou

[R] Replacing values without looping

I got an array similar to the one below, and want to replace all NAs with the previous value. 99 8.2 b NA 8.3 x NA 7.9 x 98 8.1 b NA 7.7 x 99 9.3 b ... i.e. the first two NAs should be replaced to 99, whereas the last one should be 98. I would like to apply a function to reach row, checking if th