I have a year's hydraulic data (discharge, stage height, velocity, etc.) from a USGS monitoring gauge recording values every 5 minutes. The data files contain 90K-93K lines and plotting all these data would produce a solid block of color.
What I want are the daily means and standard deviation from these data. As an occasional R user (depending on project needs) I've no idea what packages could be applied to these data frames. There likely are multiple paths to extracting these daily values so summary statistics can be calculated and plotted. I'd appreciate suggestions on where to start to learn how I can do this. TIA, Rich ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
