na.contiguous.zoo() will return the longest stretch of non-NA data. Its a zoo method of the na.contiguous generic in the core of R.
rle(!is.na(rowSums(coredata(z)))) will find all stretches. On Fri, Jul 18, 2008 at 6:47 AM, stephen sefick <[EMAIL PROTECTED]> wrote: > I have a data frame that is 122 columns and 70000ish rows it is a zoo > object, but could be easily converted or read in as something else. It is > multiparameter multistation water quality data - there are a lot of NA s. I > would like to find "chuncks" of data that are free of NA s to do some > analysis. All of the data is numeric. Is there a way besides graphing to > find these NA less "chuncks". I did not include data because of the size of > the data frame, and because I don't know exactly how to tackle this > problem. I will send a subset of the data to the list if requested and when > I get to work. As for reproducible code I am not entirly sure how to go > about this, so that too is missing. > Sorry for breaking the rules this early in the morning, > > Stephen > > -- > Let's not spend our time and resources thinking about things that are so > little or so large that all they really do for us is puff us up and make us > feel like gods. We are mammals, and have not exhausted the annoying little > problems of being mammals. > > -K. Mullis > > [[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. > ______________________________________________ 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.