Hi all, I have never worked with this kind of data before, so Please help me out with it. I have the following data set, in a csv file, looks like the following:
Jan 27, 2010 16:01:24,000 125 - - - Jan 27, 2010 16:06:24,000 125 - - - Jan 27, 2010 16:11:24,000 176 - - - Jan 27, 2010 16:16:25,000 159 - - - Jan 27, 2010 16:21:25,000 142 - - - Jan 27, 2010 16:26:24,000 142 - - - Jan 27, 2010 16:31:24,000 125 - - - Jan 27, 2010 16:36:24,000 125 - - - Jan 27, 2010 16:41:24,000 125 - - - Jan 27, 2010 16:46:24,000 125 - - - Jan 27, 2010 16:51:24,000 125 - - - Jan 27, 2010 16:56:24,000 125 - - - Jan 27, 2010 17:01:24,000 157 - - - Jan 27, 2010 17:06:24,000 172 - - - Jan 27, 2010 17:11:25,000 142 - - - Jan 27, 2010 17:16:24,000 125 - - - Jan 27, 2010 17:21:24,000 125 - - - Jan 27, 2010 17:26:24,000 125 - - - Jan 27, 2010 17:31:24,000 125 - - - Jan 27, 2010 17:36:24,000 125 - - - Jan 27, 2010 17:41:24,000 125 - - - Jan 27, 2010 17:46:24,000 125 - - - Jan 27, 2010 17:51:24,000 125 - - - ...... The first few columns are month, day, year, time with OS3 accuracy. And the last number is the measurement I need to extract. I wonder if there is a easy way to just take out the measurements only from a specific day and hour, i.e. if I want measurements from Jan 27 2010 16:--:-- then I get 125,125,176,159,142,142,125,125,125,125,125,125. Many thanks!! -- Xin Zhang Ph.D Candidate Department of Statistics University of California, Riverside [[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.